Rank	Countries/Territories	Count	Percent
1	United States	515	46.3%
2	China	190	17.1%
3	Germany	88	7.9%
4	Russia	66	5.9%
5	Korea, Republic of	39	3.5%
6	France	34	3.1%
7	Canada	26	2.3%
8	Australia	21	1.9%
9	Japan	13	1.2%
10	India	11	1%
11	Ireland	10	0.9%
12	Singapore	10	0.9%
13	Netherlands	9	0.8%
14	United Kingdom	8	0.7%
15	Ukraine	7	0.6%
16	Latvia	6	0.5%
17	Iran, Islamic Republic of	5	0.4%
18	Cyprus	5	0.4%
19		5	0.4%
20	Argentina	5	0.4%
21	Spain	4	0.4%
22	Sweden	3	0.3%
23	Romania	3	0.3%
24	Malaysia	3	0.3%
25	Bulgaria	3	0.3%
26	Colombia	2	0.2%
27	Bangladesh	2	0.2%
28	Brazil	2	0.2%
29	Denmark	2	0.2%
30	Egypt	2	0.2%
31	Greece	2	0.2%
32	Israel	2	0.2%
33	Switzerland	2	0.2%
34	Thailand	2	0.2%
35	Taiwan	1	0.1%
36	Slovakia	1	0.1%
37	Morocco	1	0.1%
38	Hong Kong	1	0.1%
39	Finland	1	0.1%