2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 16 | 33.3% |
2 | China | 12 | 25% |
3 | Germany | 10 | 20.8% |
4 | Netherlands | 5 | 10.4% |
5 | Republic of Korea | 1 | 2.1% |
6 | Russia | 1 | 2.1% |
7 | Taiwan | 1 | 2.1% |
8 | United Kingdom | 1 | 2.1% |
9 | Korea, Republic of | 1 | 2.1% |