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| 21 | ||
| 14 | ||
| 9 | ||
| 8 | ||
| 7 | ||
| 7 | ||
| 6 | ||
| 4 | ||
| 3 | ||
| 3 | ||
| 1 |
| 29 | ||
| 13 | ||
| 12 | ||
| 9 | ||
| 7 | ||
| 7 | ||
| 6 | ||
| 5 | ||
| 5 | ||
| 4 | ||
| 4 | ||
| 3 | ||
| 3 | ||
| 2 | ||
| 2 | ||
| 2 | ||
| 2 | ||
| 1 | ||
| 1 | ||
| 1 | ||
| 1 |
| 22 | 26 | 14 |
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|
| 4 | 2 | 5 | 7 | 3 | 7 | 4 | 9 | 3 | 5 | 6 | 7 |
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| SUMMER | 18 | |
| FALL | 14 | |
| SPRING | 12 | |
| WINTER | 10 |
| United States | 28 | |
| Russia | 10 | |
| Norway | 4 | |
| Mexico | 2 | |
| Afghanistan | 1 | |
| Canada | 1 | |
| Falkland Islands | 1 | |
| France | 1 | |
| Ireland | 1 | |
| Kazakhstan | 1 | |
| Mongolia | 1 | |
| Pakistan | 1 | |
| Svalbard and Jan Mayen | 1 | |
| Switzerland | 1 | |
| United Kingdom | 1 |
Observations From Members