| Nation | Total |
|---|---|
| England | 166 |
| France | 119 |
| Ireland | 87 |
| Wales | 76 |
| Scotland | 41 |
| South Africa | 38 |
| Italy | 37 |
| New Zealand | 30 |
| Australia | 18 |
| Samoa | 17 |
| Fiji | 15 |
| Argentina | 13 |
| Georgia | 7 |
| United States | 5 |
| Canada | 4 |
| Tonga | 4 |
| Moldova | 2 |
| Portugal | 1 |
| Cameroon | 1 |
| Japan | 1 |
| Romania | 1 |
| Uruguay | 1 |
| Russia | 1 |
| Namibia | 1 |
