| 2000 | 2012 | |
|---|---|---|
| Italy | 8.0 | 6.0 |
| Slovakia | 11.0 | 9.0 |
| Belgium | 12.0 | 10.0 |
| United Kingdom of Great Britain and Northern Ireland | 6.0 | 6.0 |
| Luxembourg | 13.0 | 11.0 |
| Ireland | 11.0 | 13.0 |
| Switzerland | 11.0 | 9.0 |
| Germany | 8.0 | 6.0 |
| Republic of Korea | 19.0 | 20.0 |
| Sweden | 8.0 | 8.0 |
| Slovenia | 14.0 | 12.0 |
| New Zealand | 13.0 | 13.0 |
| Norway | 10.0 | 8.0 |
| Greece | 10.0 | 7.0 |
| Estonia | 16.0 | 10.0 |
| Portugal | 12.0 | 7.0 |
| Hungary | 10.0 | 8.0 |
| Turkey | 14.0 | 13.0 |
| Japan | 13.0 | 13.0 |
| Netherlands | 7.0 | 6.0 |
| Spain | 10.0 | 6.0 |
| Czechia | 11.0 | 9.0 |
| Poland | 13.0 | 11.0 |
| Israel | 11.0 | 8.0 |
| Finland | 14.0 | 11.0 |
| France | 13.0 | 10.0 |
| United States of America | 13.0 | 12.0 |
| Mexico | 18.0 | 21.0 |
| Australia | 13.0 | 11.0 |
| Iceland | 16.0 | 12.0 |
| Canada | 12.0 | 11.0 |
| Chile | 18.0 | 15.0 |
| Denmark | 9.0 | 6.0 |
| Austria | 11.0 | 9.0 |