| # | Country | 1956 | 1957 | 1958 | 1959 | Total | Average | |
|---|---|---|---|---|---|---|---|---|
| 1 |  |
France | 1 | 17 | 27 | 15 | 60 | 12,00 |
| 2 |  |
Netherlands | 5 | 31 | 1 | 21 | 60 | 12,00 |
| 3 |  |
Switzerland | 13 | 5 | 24 | 14 | 59 | 11,80 |
| 4 |  |
Italy | 2 | 7 | 13 | 9 | 31 | 6,20 |
| 5 |  |
Germany | 3 | 8 | 5 | 5 | 27 | 5,40 |
| 6 |  |
Belgium | 1 | 5 | 8 | 9 | 25 | 5,00 |
| 7 |  |
Denmark | X | 10 | 3 | 12 | 25 | 8,33 |
| 8 |  |
United Kingdom | X | 6 | X | 16 | 22 | 11,00 |
| 9 |  |
Austria | X | 3 | 8 | 4 | 15 | 5,00 |
| 10 |  |
Sweden | X | X | 10 | 4 | 14 | 7,00 |
| 11 |  |
Luxembourg | 2 | 8 | 1 | X | 13 | 3,25 |
| 12 |  |
Monaco | X | X | X | 1 | 1 | 1,00 |
