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排名 | 国家/地区 | 数量 | 占比 |
1 | China | 149 | 55.6% |
2 | United States | 71 | 26.5% |
3 | Canada | 16 | 6% |
4 | Russia | 8 | 3% |
5 | Germany | 6 | 2.2% |
6 | Singapore | 5 | 1.9% |
7 | Mongolia | 2 | 0.7% |
8 | Japan | 2 | 0.7% |
9 | Mauritius | 1 | 0.4% |
10 | Bangladesh | 1 | 0.4% |
11 | Ghana | 1 | 0.4% |
12 | Hong Kong | 1 | 0.4% |
13 | Iran, Islamic Republic of | 1 | 0.4% |
14 | Netherlands | 1 | 0.4% |
15 | South Africa | 1 | 0.4% |
16 | Taiwan | 1 | 0.4% |
17 | Ukraine | 1 | 0.4% |
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