| 2004 | ||
| 0 | EU 27 | .. |
| 1 | EU 25 | .. |
| 2 | Belgium | 16 |
| 3 | Bulgaria | 16 |
| 4 | Czech Republic | 16 |
| 5 | Denmark | 16 |
| 6 | Germany | 14 |
| 7 | Estonia | 16 |
| 8 | Ireland | 15 |
| 9 | Greece | 15 |
| 10 | Spain | .. |
| 11 | France | .. |
| 12 | Italy | 16 |
| 13 | Cyprus | 16 |
| 14 | Latvia | 15 |
| 15 | Lithuania | 16 |
| 16 | Luxembourg | 14 |
| 17 | Hungary | 16 |
| 18 | Malta | 15 |
| 19 | Netherlands | 15 |
| 20 | Austria | 20 |
| 21 | Poland | 22 |
| 22 | Portugal | 21 |
| 23 | Romania | 18 |
| 24 | Slovenia | 17 |
| 25 | Slovakia | 17 |
| 26 | Finland | 17 |
| 27 | Sweden | 19 |
| 28 | United Kingdom | 16 |
| 29 | Iceland | 15 |
| 30 | Norway | .. |
| 31 | Switzerland | .. |