2018 | Number of total visits
Rank | Countries/Territories | Count | Percent |
1 | United States | 23 | 63.9% |
2 | China | 4 | 11.1% |
3 | Germany | 3 | 8.3% |
4 | Republic of Korea | 2 | 5.6% |
5 | Switzerland | 2 | 5.6% |
6 | Taiwan | 1 | 2.8% |
7 | Japan | 1 | 2.8% |