| Country (Percent) |
| Andorra | 28.6 in 2017 | UNECE |
| North Macedonia | 26.5 in 2009 | UNECE |
| Denmark | 24.6 in 2017 | UNECE |
| Malta | 23.9 in 2014 | UNECE |
| United States of America | 22.3 in 2014 | UNECE |
| Belgium | 20.8 in 2013 | UNECE |
| Greece | 20.4 in 2019 | UNECE |
| Canada | 19.1 in 2019 | UNECE |
| Georgia | 18.4 in 2013 | UNECE |
| Serbia | 18 in 2013 | UNECE |
| Germany | 17.8 in 2017 | UNECE |
| Slovakia | 17.7 in 2019 | UNECE |
| Austria | 17.4 in 2019 | UNECE |
| Croatia | 17 in 2006 | UNECE |
| Italy | 16.9 in 2019 | UNECE |
| Cyprus | 16.3 in 2019 | UNECE |
| Spain | 16.3 in 2017 | UNECE |
| Turkey | 16.1 in 2019 | UNECE |
| Norway | 15 in 2019 | UNECE |
| Switzerland | 14.8 in 2017 | UNECE |
| Bulgaria | 14.6 in 2008 | UNECE |
| Ireland | 14.6 in 2019 | UNECE |
| Slovenia | 14.6 in 2019 | UNECE |
| Russian Federation | 14.5 in 2013 | UNECE |
| Albania | 14.1 in 2017 | UNECE |
| Romania | 14.1 in 2014 | UNECE |
| Sweden | 13.4 in 2019 | UNECE |
| France | 12.8 in 2014 | UNECE |
| Latvia | 12.2 in 2019 | UNECE |
| Poland | 12 in 2014 | UNECE |
| Hungary | 11 in 2019 | UNECE |
| Lithuania | 10.9 in 2019 | UNECE |
| Finland | 10.4 in 2014 | UNECE |
| Portugal | 9.5 in 2005 | UNECE |
| Belarus | 7.3 in 2019 | UNECE |
| Azerbaijan | 4.8 in 2017 | UNECE |
| Kyrgyzstan | 1.7 in 2019 | UNECE |
| Republic of Moldova | 1 in 2005 | UNECE |
| Ukraine | 11.9 in 2019 | UNECE |
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