1975
0.29
Indice par pays
| Année | Indice |
|---|---|
| France | 0.36 |
| Denmark | 0.35 |
| Netherlands | 0.34 |
| Norway | 0.31 |
| New Zealand | 0.31 |
| Finland | 0.27 |
| Korea | 0.21 |
| China | 0.15 |
| Année | Indice |
|---|---|
| France | 0.36 |
| Denmark | 0.35 |
| Netherlands | 0.34 |
| Norway | 0.31 |
| New Zealand | 0.31 |
| Finland | 0.27 |
| Korea | 0.21 |
| China | 0.15 |