★ Best in the year
| # | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | Σ | Δ pts |
|---|---|---|---|---|---|---|---|---|
| 1 | New Zealand | New Zealand | New Zealand | New Zealand | New Zealand | New Zealand | 108 | – |
| 2 | England | England | England | England | England | England | 75 | – |
| 3 | Australia | France | South Africa | South Africa | South Africa | France | 69 | ▲ +2 |
| 4 | France | Australia | France | France | France | South Africa | 69 | – |
| 5 | South Africa | South Africa | Australia | Australia | Australia | Australia | 61 | – |
| 6 | Wales | Wales | Wales | Wales | Wales | Ireland | 33 | ▲ +1 |
| 7 | Ireland | Ireland | Ireland | Ireland | Ireland | Wales | 33 | – |
| 8 | Scotland | Scotland | Scotland | Scotland | Scotland | Scotland | 16 | – |
| 9 | Argentina | Argentina | Argentina | Argentina | Argentina | Argentina | 10 | – |
| 10 | Fiji | Fiji | Fiji | Fiji | Fiji | Fiji | 3 | – |
| 11 | Samoa | Samoa | Samoa | Samoa | Samoa | Samoa | 2 | – |
| 12 | Canada | Canada | Canada | Canada | Canada | Canada | 1 | – |
| 13 | Japan | Japan | Japan | Japan | Japan | Japan | 1 | – |