| Nation | Total |
|---|---|
| England | 171 |
| France | 134 |
| Wales | 81 |
| Ireland | 60 |
| Italy | 57 |
| South Africa | 38 |
| Scotland | 32 |
| Australia | 21 |
| Fiji | 20 |
| Argentina | 15 |
| New Zealand | 13 |
| Tonga | 11 |
| Samoa | 11 |
| Georgia | 9 |
| United States | 3 |
| Canada | 3 |
| Spain | 2 |
| Moldova | 2 |
| Portugal | 2 |
| 1 | |
| Belgium | 1 |
| Germany | 1 |
| Romania | 1 |
| Netherlands | 1 |
| Colombia | 1 |
