2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 15 | 29.4% |
2 | Germany | 13 | 25.5% |
3 | China | 9 | 17.6% |
4 | India | 3 | 5.9% |
5 | Republic of Korea | 3 | 5.9% |
6 | Romania | 3 | 5.9% |
7 | United Kingdom | 2 | 3.9% |
8 | Hong Kong | 2 | 3.9% |
9 | Singapore | 1 | 2% |