| Nation | Total |
|---|---|
| England | 164 |
| France | 134 |
| Ireland | 100 |
| Wales | 76 |
| South Africa | 44 |
| Scotland | 43 |
| Italy | 38 |
| New Zealand | 28 |
| Australia | 28 |
| Fiji | 17 |
| Tonga | 15 |
| Samoa | 15 |
| Argentina | 12 |
| Georgia | 11 |
| United States | 5 |
| Canada | 3 |
| Romania | 2 |
| Namibia | 1 |
| Germany | 1 |
| Moldova | 1 |
| Uruguay | 1 |
| Portugal | 1 |
