| Country | 2004 | 2007 | 2010 | 2012 |
|---|---|---|---|---|
| Denmark | ||||
| Germany | 0.00082 | 0.00051 | 0.00041 | 0.00033 |
| Luxembourg | 0.0017 | 0.00625 | 0.00038 | |
| Slovenia | 0.00559 | 0.00537 | 0.00018 | 0.00047 |
| Czech Republic | 0.00435 | 0.00362 | 0.0015 | 0.00059 |
| Netherlands | 0.00306 | 0.00244 | 0.00085 | 0.00088 |
| Austria | 0.00882 | 0.00742 | 0.00172 | 0.00094 |
| Spain | 0.0032 | 0.00215 | 0.00388 | 0.00189 |
| United Kingdom | 0.00452 | 0.00304 | 0.00211 | 0.00191 |
| Greece | 0.0126 | 0.00878 | 0.00031 | 0.00217 |
| Italy | 0.00914 | 0.00494 | 0.00354 | 0.00306 |
| Belgium | 0.00892 | 0.0061 | 0.00549 | 0.00335 |
| Sweden | 0.00535 | 0.00457 | 0.00417 | 0.00398 |
| Finland | 0.00192 | 0.00473 | 0.00537 | 0.00507 |
| Poland | 0.0889 | 0.03155 | 0.00511 | 0.00542 |
| Portugal | 0.02459 | 0.00362 | 0.00479 | 0.00623 |
| Norway | 0.01455 | 0.01117 | 0.01464 | 0.00967 |
| France | 0.00721 | 0.00313 | 0.00207 | 0.00977 |
| Hungary | 0.00727 | 0.00997 | 0.00192 | 0.0103 |
| Bulgaria | 0.04182 | 0.01502 | ||
| Romania | 0.01293 | 0.02697 | 0.0195 | |
| Slovakia | 0.0913 | 0.02946 | 0.03465 | 0.02215 |
| Switzerland | 0.00065 | 0.00016 | ||
| Malta | 0.00121 | 0 |