| Nation | Total |
|---|---|
| England | 143 |
| France | 143 |
| Ireland | 111 |
| Wales | 104 |
| Italy | 73 |
| Scotland | 65 |
| South Africa | 39 |
| New Zealand | 33 |
| Argentina | 19 |
| Samoa | 16 |
| Fiji | 15 |
| Australia | 11 |
| Georgia | 8 |
| Tonga | 7 |
| Spain | 3 |
| United States | 3 |
| Canada | 3 |
| Moldova | 2 |
| Japan | 1 |
| Russia | 1 |
| Romania | 1 |
| Norway | 1 |
| Netherlands | 1 |
| Uruguay | 1 |
| Portugal | 1 |
