HS2 sector intelligence

Optical and medical instruments
sector trade overview

A clear view of the optical and medical instruments economy: scale, momentum, market concentration, leading routes, and the products within it.

HS2 901995–2024 coverageStable
Explore the workspace Reported trade intelligence
Refreshed 2026-07-20
The numbers at a glanceLatest reported year · 2024
01

Latest trade

$672.2BGlobal sector value
02

Annual change

+2.3%Latest year on year
03

Exporters

200Active reporting countries
04

Importers

200Active reporting countries
05

HS6 products

142Classifications in sector

The sector read

$672.2B in trade, with +0.4% annualized growth over three years.

Optical and medical instruments is recorded across 18,275 active corridors, with 200 exporters and 200 importers in the latest available year.

Market signalStable+2.5% five-year CAGR

Annual trend

Momentum across three decades

Reported global trade from 1995 to 2024. Missing years remain unavailable rather than estimated. Read the methodology ↗

Annual sector tradeReported global trade from 1995 to 2024.1995: $115.9B1996: $125.9B1997: $134.4B1998: $137.0B1999: $154.1B2000: $176.7B2001: $176.3B2002: $182.4B2003: $222.4B2004: $274.5B2005: $303.6B2006: $348.3B2007: $397.0B2008: $438.3B2009: $386.0B2010: $457.7B2011: $509.8B2012: $526.3B2013: $534.0B2014: $547.9B2015: $521.0B2016: $518.5B2017: $557.1B2018: $593.0B2019: $595.3B2020: $578.1B2021: $663.4B2022: $638.5B2023: $648.0B2024: $672.2B
Reported global trade by year.

Top trade corridors

Where this sector moves

The leading exporter-to-importer relationships by latest reported sector trade value. See data sources ↗

Latest reported relationshipsTop 10 by trade value
RankExporterImporterTrade valueGrowthHS6DistanceFTA
1MexicoMEXUSA, Puerto Rico and US Virgin IslandsUSA$23.2B+12.5%1353,359 kmYes
2GermanyDEUUSA, Puerto Rico and US Virgin IslandsUSA$13.0B+4.2%1426,402 kmNo
3ChinaCHNUSA, Puerto Rico and US Virgin IslandsUSA$11.9B-3.1%14211,883 kmNo
4USA, Puerto Rico and US Virgin IslandsUSAChinaCHN$11.7B+0.2%14211,883 kmNo
5JapanJPNChinaCHN$10.2B-13.5%1361,763 kmNo
6USA, Puerto Rico and US Virgin IslandsUSAMexicoMEX$9.9B+13.2%1423,359 kmYes
7GermanyDEUChinaCHN$9.7B-6.3%1428,415 kmNo
8IrelandIRLUSA, Puerto Rico and US Virgin IslandsUSA$9.6B+5.3%1325,129 kmNo
9USA, Puerto Rico and US Virgin IslandsUSAGermanyDEU$8.2B+0%1426,402 kmNo
10USA, Puerto Rico and US Virgin IslandsUSANetherlandsNLD$8.0B+4.8%1415,877 kmNo

Market structure

Where supply and demand concentrate

Exporter and importer rankings are separated so scale on one side of the market is not mistaken for demand on the other. Check coverage ↗

Top exporters2024 ranking
RankCountryExportsPartnersHS6
1USA, Puerto Rico and US Virgin IslandsUSA$104.6B198142
2GermanyDEU$80.3B197142
3ChinaCHN$77.0B200142
4JapanJPN$41.5B193142
5MexicoMEX$31.9B152142
6NetherlandsNLD$30.8B194142
7IrelandIRL$23.9B172142
8SingaporeSGP$21.8B189142
9Switzerland, LiechtensteinCHE$20.7B190142
10United KingdomGBR$20.7B194142
Top importers2024 ranking
RankCountryImportsPartnersHS6
1USA, Puerto Rico and US Virgin IslandsUSA$125.9B185142
2ChinaCHN$67.8B162142
3GermanyDEU$46.7B180142
4NetherlandsNLD$34.4B173142
5JapanJPN$25.6B134142
6FranceFRA$22.3B188142
7United KingdomGBR$21.8B184142
8Republic of KoreaKOR$21.4B156142
9MexicoMEX$19.2B108142
10ItalyITA$16.7B155142

HS6 product coverage

The classifications inside this sector

Explore the six-digit product classifications that make up HS2 90.

182 classifications shownBrowse the product workspace ↗
01
Optical fibres, optical fibre bundles and cables: excluding those of heading no. 8544HS6 900110
02
Optical elements: polarising material, sheets and plates thereofHS6 900120
03
Lenses, contact: unmounted, of any material, excluding elements of glass not optically workedHS6 900130
04
Lenses, spectacle: unmounted, of glass, excluding elements of glass not optically workedHS6 900140
05
Lenses, spectacle: unmounted, of materials other than glassHS6 900150
06
Optical elements: lenses n.e.c. in heading no. 9001, prisms, mirrors and other optical elements, unmounted, of any material (excluding elements of glass not optically worked)HS6 900190
07
Lenses: objective, for cameras, projectors or photographic enlargers or reducers, mounted, being parts or fittings for instruments or apparatus, of any material (excluding glass not optically worked)HS6 900211
08
Lenses: objective, (other than for cameras, projectors or photographic enlargers or reducers), mounted, of any material (excluding elements of glass not optically worked)HS6 900219
09
Filters: mounted as parts or fittings for instruments or apparatus, of any material (excluding elements of glass not optically worked)HS6 900220
10
Optical elements: n.e.s. in heading no. 9002 (eg prisms and mirrors), mounted, being parts or fittings for instruments or apparatus, of any material (excluding elements of glass not optically worked)HS6 900290
11
Frames and mountings: for spectacles, goggles or the like, of plasticsHS6 900311
12
Frames and mountings: for spectacles, goggles or the like, of materials other than plasticsHS6 900319
13
Frames and mountings: parts for spectacles, goggles or the likeHS6 900390
14
Sunglasses: corrective, protective or otherHS6 900410
15
Spectacles, goggles and the like: (other than sunglasses) corrective, protective or otherHS6 900490
16
BinocularsHS6 900510
17
Monoculars: other optical telescopes and astronomical instruments, excluding instruments for radio-astronomyHS6 900580
18
Binoculars, monoculars, other optical telescopes, astronomical instruments (excluding those of radio-astronomy): parts and accessories (including mountings)HS6 900590
19
Cameras, photographic (excluding cinematographic): of a kind used for preparing printing plates or cylindersHS6 900610
20
Cameras, photographic (excluding cinematographic): of a kind used for recording documents on microfilm, microfiche or other microformsHS6 900620
21
Cameras, photographic (excluding cinematographic): specially designed for underwater use, aerial survey, medical or surgical examination of internal organs: comparison cameras for forensic or criminological useHS6 900630
22
Cameras, photographic (excluding cinematographic): instant print camerasHS6 900640
23
Cameras, photographic (excluding cinematographic): with a through-the-lens viewfinder, single lens reflex (SLR), for a roll film of a width not exceeding 35mmHS6 900651
24
Cameras, photographic (excluding cinematographic): of a kind (not SLR) for roll film of a width less than 35mmHS6 900652
25
Cameras, photographic (excluding cinematographic): of a kind (not SLR) for roll film of a width of 35mmHS6 900653
26
Cameras, photographic (excluding cinematographic): of a kind (not SLR) for roll film n.e.s. in heading no. 9006HS6 900659
27
Photographic flashlight apparatus: discharge lamp (electronic)HS6 900661
28
Photographic flashlight apparatus: flashbulbs, flashcubes and the likeHS6 900662
29
Photographic flashlight apparatus: n.e.s. in heading no. 9006HS6 900669
30
Cameras, photographic (excluding cinematographic): parts and accessoriesHS6 900691
31
Photographic flashlight apparatus: parts and accessories, for other than camerasHS6 900699
32
Cameras, cinematographic: whether or not incorporating sound recording apparatusHS6 900710
33
Cameras, cinematographic: whether or not incorporating sound recording apparatus, for film of less than 16mm width or for double-8mm filmHS6 900711
34
Cameras, cinematographic: whether or not incorporating sound recording apparatus, for film n.e.s. in item no. 9007.11HS6 900719
35
Projectors, cinematographic: whether or not incorporating sound recording or reproducing apparatusHS6 900720
36
Projectors, cinematographic: whether or not incorporating sound reproducing apparatus, for film of less than 16mm widthHS6 900721
37
Projectors, cinematographic: whether or not incorporating sound reproducing apparatus, for film 16mm or more wideHS6 900729
38
Cameras, cinematographic: parts and accessories, whether or not incorporating sound recording apparatusHS6 900791
39
Projectors, cinematographic: parts and accessories, whether or not incorporating sound reproducing apparatusHS6 900792
40
Projectors, image: slide (excluding cinematographic)HS6 900810
41
Projectors, image: microfilm, microfiche or other microform readers, whether or not capable of producing copiesHS6 900820
42
Projectors, image: (other than slide projectors and microfilm, microfiche or other microform readers), (excluding cinematographic)HS6 900830
43
Photographic (excluding cinematographic) enlargers and reducersHS6 900840
44
Image projectors, photographic enlargers and reducers, excluding cinematographicHS6 900850
45
Photographic (other than cinematographic) image projectors, enlargers, and reducers: parts and accessoriesHS6 900890
46
Photo-copying apparatus: electrostatic, operating by reproducing the original image directly onto the copy (direct process)HS6 900911
47
Photo-copying apparatus: electrostatic, operating by reproducing the original image via an intermediate onto the copy (indirect process)HS6 900912
48
Photo-copying apparatus: (excluding electrostatic), incorporating an optical systemHS6 900921
49
Photocopying apparatus: (excluding electrostatic), of the contact typeHS6 900922
50
Thermo-copying apparatusHS6 900930
51
Photo and thermo-copying apparatus: parts and accessoriesHS6 900990
52
Photo and thermo-copying apparatus: parts and accessories: automatic document feedersHS6 900991
53
Photo and thermo-copying apparatus: parts and accessories: paper feedersHS6 900992
54
Photo and thermo-copying apparatus: parts and accessories: sortersHS6 900993
55
Photo and thermo-copying apparatus: other parts and accessoriesHS6 900999
56
Photographic laboratory apparatus and equipment: for automatically developing photographic (including cinematographic) film or paper in rolls or for automatically exposing developed film to rolls of paperHS6 901010
57
Photographic laboratory apparatus and equipment (including cinematographic): negatoscopes and other equipment n.e.s. in heading no. 9010HS6 901020
58
Photographic laboratory apparatus and equipment (including cinematographic): projection screensHS6 901030
59
Photographic laboratory apparatus and equipment (including cinematographic): for the projection or drawing of circuit patterns on sensitised semiconductor materials, direct write-on-wafer apparatusHS6 901041
60
Photographic laboratory apparatus and equipment (including cinematographic): for the projection or drawing of circuit patterns on sensitised semiconductor materials, step and repeat alignersHS6 901042
61
Photographic laboratory apparatus and equipment (including cinematographic): for the projection or drawing of circuit patterns on sensitised semiconductor materials, n.e.s. in item no. 9010.4HS6 901049
62
Photographic laboratory apparatus and equipment: n.e.c. in item no. 9010.10, for photographic (including cinematographic) laboratories: negatoscopesHS6 901050
63
Photographic laboratory apparatus and equipment (including cinematographic): projection screensHS6 901060
64
Photographic laboratory apparatus and equipment (including cinematographic): parts and accessoriesHS6 901090
65
Microscopes, compound optical: stereoscopic microscopesHS6 901110
66
Microscopes, compound optical: for photomicrography, cinephotomicrography or microprojectionHS6 901120
67
Microscopes, compound optical: (other than stereoscopic and microscopes for photomicrography, cinephotomicrography or microprojection)HS6 901180
68
Microscopes, compound optical: parts and accessories (including those for photomicrography, cinephotomicrography or microprojection)HS6 901190
69
Microscopes (excluding optical microscopes): diffraction apparatusHS6 901210
70
Microscopes (excluding optical microscopes): diffraction apparatus: parts and accessoriesHS6 901290
71
Optical appliances and instruments: telescopic sights for fitting to arms: periscopes: telescopes designed to form parts of machines, appliances, instruments or apparatus of this chapterHS6 901310
72
Lasers: other than laser diodesHS6 901320
73
Optical devices, appliances and instruments: n.e.c. in heading no. 9013 (including liquid crystal devices)HS6 901380
74
Optical appliances and instruments: parts and accessories for articles of heading no. 9013HS6 901390
75
Navigational instruments and appliances: direction finding compassesHS6 901410
76
Navigational instruments and appliances: for aeronautical or space navigation (excluding compasses)HS6 901420
77
Navigational instruments and appliances: for navigation other than aeronautical or space navigation (excluding direction finding compasses)HS6 901480
78
Navigational instruments and appliances: parts and accessoriesHS6 901490
79
RangefindersHS6 901510
80
Surveying equipment: theodolites and tacheometersHS6 901520
81
Surveying equipment: levelsHS6 901530
82
Surveying equipment: photogrammetrical surveying instruments and appliancesHS6 901540
83
Surveying equipment: articles n.e.c. in heading no. 9015, including hydrographic, oceanographic, hydrological, meteorological or geophysical instruments and appliances (excluding compasses)HS6 901580
84
Surveying equipment: parts and accessories for articles of heading no. 9015HS6 901590
85
Balances: of a sensitivity of 5cg or better, with or without weightsHS6 901600
86
Drafting tables and machines: whether or not automaticHS6 901710
87
Drawing, marking-out or mathematical calculating instrumentsHS6 901720
88
Mathematical equipment: micrometers, callipers and gaugesHS6 901730
89
Mathematical instruments and equipment: n.e.s. in heading no. 9017HS6 901780
90
Drawing, marking-out equipment and mathematical instruments: parts and accessoriesHS6 901790
91
Medical, surgical instruments and appliances: electro-cardiographsHS6 901811
92
Medical, surgical instruments and appliances: ultrasonic scanning apparatusHS6 901812
93
Medical, surgical instruments and appliances: magnetic resonance imaging apparatusHS6 901813
94
Medical, surgical instruments and appliances: scintigraphic apparatusHS6 901814
95
Medical, surgical instruments and appliances: electro-diagnostic apparatus (including apparatus for functional exploratory examination or for checking physiological parameters), n.e.s. in item no. 9018.1HS6 901819
96
Medical, surgical instruments and appliances: ultra-violet or infra-red ray apparatusHS6 901820
97
Medical, surgical instruments and appliances: syringes, with or without needlesHS6 901831
98
Medical, surgical instruments and appliances: tubular metal needles and needles for suturesHS6 901832
99
Medical, surgical instruments and appliances: catheters, cannulae and the likeHS6 901839
100
Dental instruments and appliances: dental drill engines, whether or not combined on a single base with other dental equipmentHS6 901841
101
Dental instruments and appliances: other than dental drill enginesHS6 901849
102
Ophthalmic instruments and appliancesHS6 901850
103
Medical, surgical or dental instruments and appliances: n.e.c. in heading no. 9018HS6 901890
104
Mechano-therapy appliances: massage apparatus and psychological aptitude-testing apparatusHS6 901910
105
Therapeutic respiration apparatus: ozone, oxygen, aerosol therapy apparatus: artificial respiration or other therapeutic respiration apparatusHS6 901920
106
Breathing appliances and gas masks: excluding protective masks having neither mechanical parts nor replaceable filters and excluding apparatus of item no. 9019.20HS6 902000
107
Orthopaedic or fracture appliancesHS6 902110
108
Orthopaedic or fracture appliances: artificial jointsHS6 902111
109
Orthopaedic or fracture appliances: crutches, surgical belts and trusses, splints and other fracture appliancesHS6 902119
110
Dental fittings: artificial teethHS6 902121
111
Dental fittings: other than artificial teethHS6 902129
112
Artificial parts of the bodyHS6 902130
113
Artificial parts of the bodyHS6 902131
114
Artificial parts of the body: excluding artificial jointsHS6 902139
115
Hearing aids (excluding parts and accessories)HS6 902140
116
Pacemakers: for stimulating heart muscles (excluding parts and accessories)HS6 902150
117
Appliances: worn, carried or implanted in the body, to compensate for a defect or disabilityHS6 902190
118
Apparatus based on the use of x-rays, including radiography or radiotherapy apparatus: for medical, surgical, dental or veterinary usesHS6 902211
119
Apparatus based on the use of x-rays: including radiography or radiotherapy apparatus, whether or not for medical, surgical, dental or veterinary uses, computed tomography apparatusHS6 902212
120
Apparatus based on the use of x-rays: including radiography or radiotherapy apparatus, for dental uses, excluding computed tomography apparatusHS6 902213
121
Apparatus based on the use of x-rays: including radiography or radiotherapy apparatus, for medical, surgical or veterinary uses, not dental uses, excluding computed tomography apparatusHS6 902214
122
Apparatus based on the use of x-rays, including radiography or radiotherapy apparatus: for other than medical, surgical, dental or veterinary usesHS6 902219
123
Apparatus based on the use of alpha, beta or gamma radiations, including radiography or radiotherapy apparatus: for medical, surgical, dental or veterinary usesHS6 902221
124
Apparatus based on the use of alpha, beta or gamma radiations, including radiography or radiotherapy apparatus: (for other than medical, surgical, dental or veterinary uses)HS6 902229
125
X-ray tubesHS6 902230
126
Apparatus based on use of x-rays and similar: parts and accessories (x-ray generators, tubes, high tension generators, control panels and desks, screens, examination or treatment tables, chairs and likeHS6 902290
127
Instruments, apparatus and models: designed for demonstrational purposes (in education or exhibitions), unsuitable for other usesHS6 902300
128
Machines and appliances: for testing the hardness, strength, compressibility, elasticity or other mechanical properties of metalsHS6 902410
129
Machines and appliances: for testing the hardness, strength, compressibility, elasticity or other mechanical properties of materials other than metalsHS6 902480
130
Machines and appliances: parts and accessories for those testing hardness, strength, compressibility, elasticity or other mechanical properties of materials (eg metal, wood, textiles, paper, plastics)HS6 902490
131
Thermometers and pyrometers: liquid filled, for direct reading, not combined with other instrumentsHS6 902511
132
Thermometers and pyrometers: (other than liquid filled, for direct reading), not combined with other instrumentsHS6 902519
133
Barometers: not combined with other instrumentsHS6 902520
134
Hydrometers and similar floating instruments, barometers, hygrometers, psychrometers, thermometers, pyrometers: recording or not, any combination of these instruments (excluding thermometers and barometers not combined with other instruments)HS6 902580
135
Hydrometers and similar floating instruments, barometers, hygrometers, psychrometers, thermometers, pyrometers: recording or not, any combination of these instruments, parts and accessoriesHS6 902590
136
Instruments and apparatus: for measuring or checking the flow or level of liquidsHS6 902610
137
Instruments and apparatus: for measuring or checking pressureHS6 902620
138
Instruments and apparatus: for measuring or checking variables of liquids or gases (excluding pressure or the flow and level of liquids and those of heading no. 9014, 9015, 9028 and 9032)HS6 902680
139
Instruments and apparatus: parts and accessories for those measuring or checking the flow, level, pressure or other variables of liquids or gases (excluding those of heading no. 9014, 9015, 9028 or 9032)HS6 902690
140
Instruments and apparatus: gas or smoke analysis apparatus, for physical or chemical analysisHS6 902710
141
Chromatographs and electrophoresis instrumentsHS6 902720
142
Spectrometers, spectrophotometers and spectrographs: using optical radiations (UV, visible, IR)HS6 902730
143
Exposure metersHS6 902740
144
Instruments and apparatus: using optical radiations (UV, visible, IR), (other than spectrometers, spectrophotometers and spectrographs)HS6 902750
145
Instruments and apparatus: for physical or chemical analysis, for measuring or checking viscosity, porosity, expansion, surface tension or quantities of heat, sound or light, n.e.c. in heading no. 9027HS6 902780
146
Instruments and apparatus: for physical or chemical analysis, for measuring or checking viscosity, porosity, expansion, surface tension or quantities of heat, sound or light, mass spectrometersHS6 902781
147
Instruments and apparatus: for physical or chemical analysis, for measuring or checking viscosity, porosity, expansion, surface tension or quantities of heat, sound or light, exposure metersHS6 902789
148
Microtomes and parts and accessories thereofHS6 902790
149
Meters: gas, supply or production meters, including calibrating meters thereofHS6 902810
150
Meters: liquid supply or production meters, including calibrating meters thereofHS6 902820
151
Meters: electricity supply or production meters, including calibrating meters thereofHS6 902830
152
Meters: parts and accessories of gas, liquid, electricity supply or production meters, including calibrating meters thereofHS6 902890
153
Meters and counters: revolution counters, production counters, taximeters, mileometers, pedometers and the likeHS6 902910
154
Meters: speed indicators and tachometers: stroboscopesHS6 902920
155
Meters and counters: parts and accessories for revolution and production counters, taximeters, mileometers, pedometers and the like: speed indicators, tachometers (excluding heading no. 9015), stroboscopesHS6 902990
156
Instruments and apparatus: for measuring or detecting ionising radiationsHS6 903010
157
Cathode-ray oscilloscopes and cathode-ray oscillographsHS6 903020
158
Multimeters: for measuring or checking voltage, current, resistance or power, without a recording deviceHS6 903031
159
Multimeters: for measuring or checking voltage, current, resistance or power, with a recording deviceHS6 903032
160
Instruments and apparatus: for measuring or checking voltage, current, resistance or power, without a recording device (excluding multimeters)HS6 903033
161
Instruments and apparatus: for measuring or checking voltage, current, resistance or power, without a recording device (excluding multimeters)HS6 903039
162
Instruments and apparatus: specially designed for telecommunications (e.g. cross-talk meters, gain measuring instruments, distortion factor meters, psophometers)HS6 903040
163
Instruments and apparatus: with a recording device, specially designed for telecommunications (eg cross-talk meters, gain measuring instruments, distortion factor meters, psophometers)HS6 903081
164
Instruments and apparatus: for measuring or checking semiconductor wafers or devicesHS6 903082
165
Instruments and apparatus: for measuring or detecting alpha, beta, gamma, x-ray, cosmic or other ionising radiations, with a recording deviceHS6 903083
166
Instruments and apparatus: n.e.c. in heading no. 9030, with a recording deviceHS6 903084
167
Instruments and apparatus: for measuring or detecting alpha, beta, gamma, x-ray, cosmic or other ionising radiations, without a recording deviceHS6 903089
168
Instruments, apparatus for measuring, checking electrical quantities, not meters of heading no. 9028: parts and accessories, for measuring or detecting alpha, beta, gamma, x-ray, cosmic and other radiationsHS6 903090
169
Machines: for balancing mechanical partsHS6 903110
170
Test benchesHS6 903120
171
Profile projectorsHS6 903130
172
Optical instruments and appliances: for measuring or checking, n.e.s. in chapter 90HS6 903140
173
Optical instruments and appliances: for inspecting semiconductor wafers or devices or for inspecting photomasks or reticles used in manufacturing semiconductor devices, n.e.s. in chapter 90HS6 903141
174
Optical instruments and appliances: for measuring or checking, n.e.s. in chapter 90HS6 903149
175
Instruments, appliances and machines: for measuring or checking n.e.c. in chapter 90HS6 903180
176
Instruments, appliances and machines: parts and accessories for those measuring or checking devices of heading no. 9031HS6 903190
177
Regulating or controlling instruments and apparatus: automatic type, thermostatsHS6 903210
178
Regulating or controlling instruments and apparatus: automatic, manostatsHS6 903220
179
Regulating or controlling instruments and apparatus: automatic, hydraulic or pneumaticHS6 903281
180
Regulating or controlling instruments and apparatus: automatic, other than hydraulic or pneumaticHS6 903289
181
Regulating or controlling instruments and apparatus: automatic, parts and accessoriesHS6 903290
182
Machines and appliances: instruments or apparatus of chapter 90: parts and accessories n.e.c. in chapter 90HS6 903300

Definitions and coverage

Read the numbers with context

Clear definitions keep reported observations and calculated indicators in their proper context. Read our Responsible AI principles ↗

01

Reported values

Trade values describe reported merchandise trade for the HS2 classification. They are not company-level sales, retail quotes, or shipment records.

02

Calculated indicators

Growth, concentration, volatility, and peak comparisons are calculated from reported observations and should be read with their coverage period.

03

Missing data

A missing observation remains unavailable. It is not filled, interpolated, or presented as a forecast.

Coverage: 1995–2024 · Data refreshed 2026-07-20 09:34:08

Data source

OECD trade statistics with CEPII context

OECD (2025), Balanced international merchandise trade statistics (BIMTS) - HS2017-6D, OECD Data Explorer (accessed on 2026-08-27). OECD BIMTS is the primary trade series for this view. Supporting bilateral trade context uses CEPII BACI bilateral trade flows (202601) under Etalab 2.0 Open Licence. Yugalinks presents derived views of reported observations and calculated indicators. Data terms: OECD Terms & Conditions.