Rank	Countries/Territories	Count	Percent
1	United States	644	33.5%
2	China	590	30.7%
3	Germany	108	5.6%
4	Switzerland	80	4.2%
5	Russia	58	3%
6	Korea, Republic of	58	3%
7	Japan	45	2.3%
8	United Kingdom	32	1.7%
9	Iran, Islamic Republic of	28	1.5%
10	Israel	28	1.5%
11	Italy	26	1.4%
12	India	26	1.4%
13	Poland	26	1.4%
14	Netherlands	20	1%
15	France	18	0.9%
16	Latvia	14	0.7%
17	Australia	13	0.7%
18	Canada	11	0.6%
19	Egypt	11	0.6%
20	Singapore	10	0.5%
21	Hong Kong	8	0.4%
22	Taiwan	6	0.3%
23	Turkey	5	0.3%
24	Cyprus	5	0.3%
25	Chile	4	0.2%
26	Brazil	4	0.2%
27	Belgium	4	0.2%
28	Ireland	4	0.2%
29	Pakistan	4	0.2%
30	Portugal	3	0.2%
31	Indonesia	3	0.2%
32	Spain	3	0.2%
33	Tanzania, United Republic of	3	0.2%
34	Thailand	3	0.2%
35	Venezuela, Bolivarian Republic of	2	0.1%
36	Greece	2	0.1%
37	Finland	1	0.1%
38	Czech Republic	1	0.1%
39	Denmark	1	0.1%
40	Bolivia, Plurinational State of	1	0.1%
41	Bangladesh	1	0.1%
42	Armenia	1	0.1%
43	Romania	1	0.1%
44	Malaysia	1	0.1%
45	Mauritius	1	0.1%
46	Mexico	1	0.1%
47	Mongolia	1	0.1%