排名	国家/地区	数量	占比
1	United States	574	40.3%
2	China	476	33.4%
3	Germany	114	8%
4	Japan	33	2.3%
5	India	26	1.8%
6	Iran, Islamic Republic of	23	1.6%
7	France	15	1.1%
8	Netherlands	15	1.1%
9	Singapore	15	1.1%
10	Australia	14	1%
11	Canada	12	0.8%
12	Ukraine	11	0.8%
13	Ireland	10	0.7%
14	Brazil	10	0.7%
15	Korea, Republic of	9	0.6%
16	United Kingdom	9	0.6%
17	Taiwan	7	0.5%
18	Cyprus	7	0.5%
19	Norway	5	0.4%
20	Syrian Arab Republic	5	0.4%
21	Italy	4	0.3%
22	Argentina	3	0.2%
23	Hong Kong	3	0.2%
24	Israel	2	0.1%
25	Bangladesh	2	0.1%
26	Mongolia	2	0.1%
27	New Zealand	2	0.1%
28	Russia	2	0.1%
29	South Africa	2	0.1%
30	Sweden	2	0.1%
31	Peru	2	0.1%
32	Philippines	1	0.1%
33	Slovakia	1	0.1%
34	Slovenia	1	0.1%
35	Latvia	1	0.1%
36	Mexico	1	0.1%
37	Egypt	1	0.1%
38	Ethiopia	1	0.1%
39	Viet Nam	1	0.1%