2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 21 | 43.8% |
2 | Germany | 9 | 18.8% |
3 | China | 7 | 14.6% |
4 | Netherlands | 4 | 8.3% |
5 | Romania | 3 | 6.2% |
6 | Russia | 1 | 2.1% |
7 | Ukraine | 1 | 2.1% |
8 | Republic of Korea | 1 | 2.1% |
9 | Korea, Republic of | 1 | 2.1% |