| Switzerland | 0.95 |
| Danmark | 0.87 |
| Sweden | 0.85 |
| Iceland | 0.85 |
| Netherlands | 0.85 |
| United Kingdom | 0.84 |
| Canada | 0.82 |
| Norway | 0.74 |
| United States | 0.72 |
| Slovak Republic | 0.72 |
| Lithuania | 0.71 |
| Australia | 0.70 |
| Poland | 0.64 |
| Germany | 0.64 |
| Israel | 0.58 |
| Slovenia | 0.56 |
| Latvia | 0.53 |
| Belgium | 0.51 |
| Finland | 0.51 |
| Hong Kong | 0.49 |
| Estonia | 0.48 |
| Portugal | 0.47 |
| Spain | 0.47 |
| Italy | 0.44 |
| Bulgaria | 0.37 |
| Hungary | 0.34 |
| Czesc Republic | 0.33 |
| Austria | 0.28 |
| Korea, Republic of | 0.27 |
| Romania | 0.27 |
| Cyprus | 0.26 |
| Turkey | 0.21 |
| Greece | 0.19 |
| Russian Federation | 0.18 |
| Japan | 0.10 |
| Ireland | 0.06 |
| | 0.00 |