2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 18 | 36% |
2 | China | 9 | 18% |
3 | Germany | 7 | 14% |
4 | Netherlands | 5 | 10% |
5 | United Kingdom | 3 | 6% |
6 | Canada | 1 | 2% |
7 | Republic of Korea | 1 | 2% |
8 | Singapore | 1 | 2% |
9 | Spain | 1 | 2% |
10 | Taiwan | 1 | 2% |
11 | Tanzania | 1 | 2% |
12 | Israel | 1 | 2% |
13 | Finland | 1 | 2% |