排名	国家/地区	数量	占比
1	China	276	59.7%
2	United States	117	25.3%
3	Canada	12	2.6%
4	Germany	12	2.6%
5	Japan	8	1.7%
6		5	1.1%
7	United Kingdom	5	1.1%
8	South Africa	3	0.6%
9	Romania	3	0.6%
10	Singapore	2	0.4%
11	India	2	0.4%
12	Iraq	2	0.4%
13	Ireland	2	0.4%
14	Mongolia	2	0.4%
15	Norway	2	0.4%
16	Australia	2	0.4%
17	Austria	2	0.4%
18	Brazil	1	0.2%
19	Hong Kong	1	0.2%
20	Georgia	1	0.2%
21	Portugal	1	0.2%
22	Slovakia	1	0.2%