| Rank | Country | Value | Year |
|---|---|---|---|
| 1 | Sweden | 1.018878 | 2017 |
| 2 | Luxembourg | 0.99574 | 2017 |
| 3 | Norway | 0.992717 | 2017 |
| 4 | Denmark | 0.737449 | 2017 |
| 5 | United Kingdom | 0.698487 | 2017 |
| 6 | Germany | 0.667405 | 2017 |
| 7 | Netherlands | 0.603687 | 2017 |
| 8 | Switzerland | 0.452792 | 2017 |
| 9 | Belgium | 0.445322 | 2017 |
| 10 | France | 0.428001 | 2017 |
| 11 | Finland | 0.424497 | 2017 |
| 12 | Ireland | 0.3174 | 2017 |
| 13 | Italy | 0.301021 | 2017 |
| 14 | Austria | 0.300043 | 2017 |
| 15 | Iceland | 0.283771 | 2017 |
| 16 | Canada | 0.264092 | 2017 |
| 17 | Australia | 0.231997 | 2017 |
| 18 | New Zealand | 0.230957 | 2017 |
| 19 | Japan | 0.227698 | 2017 |
| 20 | Spain | 0.194949 | 2017 |
| 21 | Portugal | 0.179115 | 2017 |
| 22 | United States | 0.176803 | 2017 |
| 23 | Estonia | 0.164825 | 2017 |
| 24 | Slovenia | 0.158919 | 2017 |
| 25 | Greece | 0.156248 | 2017 |
| 26 | Czechia | 0.150192 | 2017 |
| 27 | Korea, Rep. | 0.14383 | 2017 |
| 28 | Poland | 0.134688 | 2017 |
| 29 | Slovak Republic | 0.131963 | 2017 |
| 30 | Lithuania | 0.129733 | 2017 |
| 31 | Hungary | 0.110806 | 2017 |