| 1999 | ||
| 0 | European Union (15 countries) | 4047 |
| 1 | Belgium | 12212 |
| 2 | Denmark | 5118 |
| 3 | Germany | 13834 |
| 4 | Greece | 7410 |
| 5 | Spain | 16339 |
| 6 | France | 5464 |
| 7 | Ireland | 14075 |
| 8 | Italy | 1900 |
| 9 | Luxembourg | 6851 |
| 10 | Netherlands | 2107 |
| 11 | Austria | 7959 |
| 12 | Portugal | 4730 |
| 13 | Finland | 13090 |
| 14 | Sweden | 3242 |
| 15 | United Kingdom | 10956 |