2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | Germany | 9 | 36% |
2 | China | 4 | 16% |
3 | United States | 3 | 12% |
4 | Taiwan | 2 | 8% |
5 | Republic of Korea | 2 | 8% |
6 | Senegal | 1 | 4% |
7 | Singapore | 1 | 4% |
8 | Finland | 1 | 4% |
9 | France | 1 | 4% |
10 | Hong Kong | 1 | 4% |