2021 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 54 | 33.3% |
2 | United States | 48 | 29.6% |
3 | Germany | 13 | 8% |
4 | Netherlands | 12 | 7.4% |
5 | Russia | 11 | 6.8% |
6 | France | 10 | 6.2% |
7 | Denmark | 4 | 2.5% |
8 | United Kingdom | 3 | 1.9% |
9 | Iran, Islamic Republic of | 3 | 1.9% |
10 | Korea, Republic of | 2 | 1.2% |
11 | Canada | 2 | 1.2% |