| Country (Number) |
| United States of America | 134,242 in 2020 | OECD |
| United Kingdom | 26,852 in 2020 | OECD |
| Brazil | 23,854 in 2020 | OECD |
| Japan | 20,852 in 2020 | OECD |
| France | 20,655 in 2017 | OECD |
| Turkey | 13,740 in 2019 | OECD |
| Spain | 13,045 in 2021 | OECD |
| Italy | 12,768 in 2017 | OECD |
| Germany | 9,450 in 2020 | OECD |
| Finland | 8,416 in 2020 | OECD |
| Republic of Korea | 7,532 in 2020 | OECD |
| Canada | 6,166 in 2019 | OECD |
| Australia | 5,354 in 2021 | OECD |
| Netherlands | 3,824 in 2020 | OECD |
| Sweden | 3,323 in 2018 | OECD |
| Poland | 3,154 in 2020 | OECD |
| Romania | 2,353 in 2019 | OECD |
| Belgium | 2,345 in 2018 | OECD |
| Russian Federation | 2,302 in 2019 | OECD |
| Czech Republic | 2,294 in 2021 | OECD |
| Chile | 2,180 in 2020 | OECD |
| Mexico | 2,172 in 2020 | OECD |
| Colombia | 2,031 in 2020 | OECD |
| Portugal | 1,687 in 2019 | OECD |
| Argentina | 1,535 in 2020 | OECD |
| Switzerland | 1,430 in 2020 | OECD |
| Denmark | 1,394 in 2020 | OECD |
| Austria | 1,213 in 2021 | OECD |
| Norway | 901 in 2016 | OECD |
| South Africa | 785 in 2018 | OECD |
| Slovakia | 723 in 2019 | OECD |
| Israel | 682 in 2020 | OECD |
| New Zealand | 655 in 2016 | OECD |
| Peru | 618 in 2020 | OECD |
| Hungary | 576 in 2019 | OECD |
| Croatia | 571 in 2020 | OECD |
| Ireland | 567 in 2018 | OECD |
| Greece | 514 in 2020 | OECD |
| Slovenia | 459 in 2020 | OECD |
| Lithuania | 271 in 2021 | OECD |
| Costa Rica | 250 in 2020 | OECD |
| Iceland | 175 in 2021 | OECD |
| Estonia | 113 in 2021 | OECD |
| Bulgaria | 86 in 2020 | OECD |
| Luxembourg | 66 in 2021 | OECD |
| Latvia | 60 in 2021 | OECD |
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