2021 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 5 | 33.3% |
2 | Netherlands | 4 | 26.7% |
3 | Iran, Islamic Republic of | 3 | 20% |
4 | China | 2 | 13.3% |
5 | Germany | 1 | 6.7% |
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 5 | 33.3% |
2 | Netherlands | 4 | 26.7% |
3 | Iran, Islamic Republic of | 3 | 20% |
4 | China | 2 | 13.3% |
5 | Germany | 1 | 6.7% |