2021 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 18 | 43.9% |
2 | Canada | 9 | 22% |
3 | China | 8 | 19.5% |
4 | France | 2 | 4.9% |
5 | Germany | 2 | 4.9% |
6 | Iran, Islamic Republic of | 2 | 4.9% |
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 18 | 43.9% |
2 | Canada | 9 | 22% |
3 | China | 8 | 19.5% |
4 | France | 2 | 4.9% |
5 | Germany | 2 | 4.9% |
6 | Iran, Islamic Republic of | 2 | 4.9% |