| 2000 | 2012 | |
|---|---|---|
| Estonia | 79.0 | 87.0 |
| Republic of Korea | 74.0 | 73.0 |
| Chile | 69.0 | 75.0 |
| New Zealand | 83.0 | 81.0 |
| Iceland | 78.0 | 84.0 |
| Germany | 88.0 | 89.0 |
| Canada | 83.0 | 83.0 |
| Greece | 85.0 | 87.0 |
| Belgium | 82.0 | 83.0 |
| Slovenia | 81.0 | 85.0 |
| Turkey | 59.0 | 74.0 |
| United Kingdom | 84.0 | 86.0 |
| Italy | 87.0 | 89.0 |
| Australia | 82.0 | 84.0 |
| Hungary | 87.0 | 89.0 |
| Poland | 82.0 | 84.0 |
| Czech Republic | 85.0 | 85.0 |
| Sweden | 87.0 | 87.0 |
| Austria | 85.0 | 88.0 |
| Slovakia | 84.0 | 85.0 |
| Switzerland | 83.0 | 86.0 |
| Ireland | 81.0 | 82.0 |
| France | 81.0 | 84.0 |
| Netherlands | 86.0 | 87.0 |
| Denmark | 87.0 | 88.0 |
| Mexico | 55.0 | 64.0 |
| Norway | 84.0 | 86.0 |
| Luxembourg | 82.0 | 84.0 |
| Spain | 84.0 | 88.0 |
| Israel | 79.0 | 82.0 |
| Portugal | 80.0 | 83.0 |
| United States of America | 79.0 | 80.0 |
| Japan | 77.0 | 77.0 |
| Finland | 81.0 | 87.0 |