Rank	Countries/Territories	Count	Percent
1	United States	309	42.2%
2	China	147	20.1%
3	Germany	72	9.8%
4	Korea, Republic of	39	5.3%
5	Canada	21	2.9%
6	Australia	19	2.6%
7	Russia	12	1.6%
8	Singapore	10	1.4%
9	Japan	10	1.4%
10	Ireland	10	1.4%
11	India	9	1.2%
12	Netherlands	8	1.1%
13	Ukraine	6	0.8%
14	Iran, Islamic Republic of	5	0.7%
15	France	5	0.7%
16		5	0.7%
17	Latvia	4	0.5%
18	United Kingdom	4	0.5%
19	Malaysia	3	0.4%
20	Romania	3	0.4%
21	Spain	3	0.4%
22	Cyprus	3	0.4%
23	Denmark	2	0.3%
24	Egypt	2	0.3%
25	Argentina	2	0.3%
26	Brazil	2	0.3%
27	Colombia	2	0.3%
28	Greece	2	0.3%
29	Sweden	2	0.3%
30	Switzerland	2	0.3%
31	Thailand	2	0.3%
32	Israel	2	0.3%
33	Morocco	1	0.1%
34	Slovakia	1	0.1%
35	Taiwan	1	0.1%
36	Hong Kong	1	0.1%
37	Bulgaria	1	0.1%
38	Finland	1	0.1%