2017 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 19 | 32.2% |
2 | Germany | 15 | 25.4% |
3 | China | 9 | 15.3% |
4 | Russia | 7 | 11.9% |
5 | Nigeria | 4 | 6.8% |
6 | Republic of Korea | 1 | 1.7% |
7 | United Kingdom | 1 | 1.7% |
8 | Greece | 1 | 1.7% |
9 | India | 1 | 1.7% |
10 | Netherlands | 1 | 1.7% |