| Nation | Total |
|---|---|
| England | 167 |
| France | 133 |
| Ireland | 99 |
| Wales | 71 |
| South Africa | 45 |
| Scotland | 42 |
| Italy | 36 |
| New Zealand | 34 |
| Australia | 30 |
| Fiji | 18 |
| Samoa | 14 |
| Tonga | 13 |
| Argentina | 12 |
| Georgia | 11 |
| United States | 5 |
| Canada | 2 |
| Romania | 2 |
| Germany | 1 |
| Uruguay | 1 |
| Moldova | 1 |
| Portugal | 1 |
| Namibia | 1 |
| 1 |
