2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 61 | 73.5% |
2 | Germany | 14 | 16.9% |
3 | China | 7 | 8.4% |
4 | Switzerland | 1 | 1.2% |
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 61 | 73.5% |
2 | Germany | 14 | 16.9% |
3 | China | 7 | 8.4% |
4 | Switzerland | 1 | 1.2% |