| Member state | 2005 | 2010 | 2013 |
|---|---|---|---|
| EU28 | 27 | 35 | 38 |
| Austria | 51 | 55 | 56 |
| Belgium | 49 | 60 | 63 |
| Bulgaria | 18 | 34 | 39 |
| Cyprus | 9 | 10 | 11 |
| Czech Republic | 18 | 27 | 32 |
| Denmark | 9 | 20 | 27 |
| Estonia | 16 | 25 | 32 |
| Finland | 12 | 19 | 23 |
| France | 47 | 60 | 68 |
| Germany | 25 | 27 | 30 |
| Greece | 1 | 3 | 4 |
| Hungary | 13 | 21 | 24 |
| Ireland | 14 | 31 | 37 |
| Italy | 28 | 38 | 40 |
| Latvia | 18 | 33 | 43 |
| Lithuania | 16 | 21 | 23 |
| Luxembourg | 49 | 64 | 65 |
| Malta | 26 | 28 | 30 |
| Netherlands | 16 | 17 | 17 |
| Poland | 10 | 22 | 27 |
| Portugal | 22 | 46 | 49 |
| Romania | 18 | 31 | 34 |
| Slovakia | 10 | 16 | 18 |
| Slovenia | 21 | 35 | 40 |
| Spain | 42 | 52 | 54 |
| Sweden | 5 | 14 | 24 |
| United Kingdom | 20 | 28 | 31 |