排名	国家/地区	数量	占比
1	China	259	38.4%
2	United States	161	23.9%
3	Canada	105	15.6%
4		27	4%
5	Japan	20	3%
6	South Africa	15	2.2%
7	Germany	14	2.1%
8	France	11	1.6%
9	Singapore	9	1.3%
10	Netherlands	6	0.9%
11	Romania	6	0.9%
12	Australia	6	0.9%
13	Korea, Republic of	5	0.7%
14	Malaysia	3	0.4%
15	Russia	3	0.4%
16	Ireland	3	0.4%
17	Denmark	3	0.4%
18	Slovakia	3	0.4%
19	Viet Nam	2	0.3%
20	Switzerland	2	0.3%
21	Taiwan	2	0.3%
22	Turkey	2	0.3%
23	Cyprus	2	0.3%
24	Brazil	1	0.1%
25	Bulgaria	1	0.1%
26	Hong Kong	1	0.1%
27	Hungary	1	0.1%
28	Spain	1	0.1%