| country | 2000 | 2011 | 2012 |
|---|---|---|---|
| Austria | 1.21 | 1.54 | |
| Belgium | 1.83 | 2.08 | |
| Bulgaria | 0.18 | 0.21 | |
| Croatia | 0.72 | 0.86 | |
| Cyprus | 0.76 | 1.17 | |
| Czech Republic | 0.47 | 0.76 | |
| Denmark | 1.48 | 1.75 | |
| Estonia | 0.4 | 0.34 | |
| European Union (27 countries) | 1.34 | 1.73 | |
| Finland | 0.79 | 0.92 | |
| France | 1.8 | 2.32 | |
| Germany | 1.5 | 1.9 | |
| Greece | 1.03 | 1.33 | |
| Hungary | 0.59 | 0.99 | |
| Ireland | 0.7 | 1.51 | |
| Italy | 1.5 | 2.34 | |
| Latvia | 0.25 | 0.37 | |
| Lithuania | 0.49 | 0.63 | |
| Luxembourg | 2.39 | 3.29 | |
| Malta | 1.27 | 1.3 | |
| Netherlands | 2.4 | 3.12 | |
| Norway | 1.36 | 0.0 | |
| Poland | 0.39 | 0.47 | |
| Portugal | 0.78 | 0.94 | |
| Romania | 0.35 | 0.22 | |
| Serbia | 0.17 | 0.22 | |
| Slovakia | 0.56 | 0.79 | |
| Slovenia | 0.7 | 1.2 | |
| Spain | 1.12 | 2.27 | |
| Sweden | 1.47 | 1.59 | |
| Switzerland | 3.32 | 3.61 | |
| Turkey | 0.5 | 0.0 | |
| United Kingdom | 2.13 | 3.24 |