2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 22 | 42.3% |
2 | Germany | 11 | 21.2% |
3 | China | 8 | 15.4% |
4 | Netherlands | 4 | 7.7% |
5 | Romania | 3 | 5.8% |
6 | Singapore | 1 | 1.9% |
7 | Republic of Korea | 1 | 1.9% |
8 | Canada | 1 | 1.9% |
9 | Korea, Republic of | 1 | 1.9% |