2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 18 | 35.3% |
2 | Germany | 12 | 23.5% |
3 | China | 11 | 21.6% |
4 | Netherlands | 3 | 5.9% |
5 | India | 3 | 5.9% |
6 | Ireland | 1 | 2% |
7 | Malaysia | 1 | 2% |
8 | Republic of Korea | 1 | 2% |
9 | United Kingdom | 1 | 2% |