2021 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 47 | 44.3% |
2 | United States | 39 | 36.8% |
3 | Germany | 8 | 7.5% |
4 | Korea, Republic of | 3 | 2.8% |
5 | Luxembourg | 2 | 1.9% |
6 | Netherlands | 2 | 1.9% |
7 | Russia | 2 | 1.9% |
8 | France | 2 | 1.9% |
9 | United Kingdom | 1 | 0.9% |