| country | 2004 | 2012 |
|---|---|---|
| Austria | 60.0 | 59.0 |
| Belgium | 51.0 | 57.0 |
| Bosnia and Herzegovina | 0.0 | None |
| Bulgaria | 17.0 | 25.0 |
| Cyprus | 3.0 | 21.0 |
| Czech Republic | 5.0 | 23.0 |
| Denmark | 34.0 | 45.0 |
| Estonia | 25.0 | 32.0 |
| European Union (27 countries) | 31.0 | 41.0 |
| European Union (28 countries) | 0.0 | 41.0 |
| Finland | 34.0 | 33.0 |
| France | 29.0 | 39.0 |
| Germany | 56.0 | 64.0 |
| Greece | 10.0 | 17.0 |
| Hungary | 12.0 | 25.0 |
| Ireland | 29.0 | 37.0 |
| Italy | 18.0 | 38.0 |
| Kosovo (under United Nations Security Council Resolution 1244/99) | 0.0 | None |
| Latvia | 5.0 | 16.0 |
| Lithuania | 2.0 | 20.0 |
| Luxembourg | 41.0 | 47.0 |
| Malta | 14.0 | 12.0 |
| Montenegro | 0.0 | 1.0 |
| Netherlands | 47.0 | 49.0 |
| Norway | 37.0 | 40.0 |
| Portugal | 13.0 | 26.0 |
| Romania | 1.0 | 3.0 |
| Slovakia | 6.0 | 13.0 |
| Slovenia | 20.0 | 40.0 |
| Spain | 31.0 | 27.0 |
| Sweden | 45.0 | 48.0 |
| Switzerland | 49.0 | 50.0 |
| Turkey | 1.0 | 1.0 |
| United Kingdom | 23.0 | 46.0 |