2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 17 | 29.8% |
2 | China | 14 | 24.6% |
3 | Germany | 14 | 24.6% |
4 | India | 3 | 5.3% |
5 | Netherlands | 3 | 5.3% |
6 | Republic of Korea | 2 | 3.5% |
7 | Canada | 2 | 3.5% |
8 | Singapore | 1 | 1.8% |
9 | Korea, Republic of | 1 | 1.8% |