2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 17 | 41.5% |
2 | China | 5 | 12.2% |
3 | Australia | 3 | 7.3% |
4 | Iran | 3 | 7.3% |
5 | Netherlands | 3 | 7.3% |
6 | Republic of Korea | 3 | 7.3% |
7 | United Kingdom | 3 | 7.3% |
8 | France | 2 | 4.9% |
9 | Germany | 2 | 4.9% |