2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 23 | 40.4% |
2 | Germany | 12 | 21.1% |
3 | Netherlands | 7 | 12.3% |
4 | China | 6 | 10.5% |
5 | 4 | 7% | |
6 | Korea, Republic of | 2 | 3.5% |
7 | France | 1 | 1.8% |
8 | Republic of Korea | 1 | 1.8% |
9 | United Kingdom | 1 | 1.8% |