2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 18 | 32.1% |
2 | China | 13 | 23.2% |
3 | Germany | 12 | 21.4% |
4 | Netherlands | 5 | 8.9% |
5 | Romania | 3 | 5.4% |
6 | Republic of Korea | 2 | 3.6% |
7 | United Kingdom | 1 | 1.8% |
8 | Korea, Republic of | 1 | 1.8% |
9 | Finland | 1 | 1.8% |