2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 47 | 42.7% |
2 | China | 33 | 30% |
3 | Germany | 16 | 14.5% |
4 | Netherlands | 4 | 3.6% |
5 | France | 4 | 3.6% |
6 | Republic of Korea | 3 | 2.7% |
7 | Taiwan | 1 | 0.9% |
8 | Canada | 1 | 0.9% |
9 | Finland | 1 | 0.9% |