Rank	Countries/Territories	Count	Percent
1	United States	272	34.9%
2	China	201	25.8%
3	Germany	78	10%
4	India	40	5.1%
5	Japan	22	2.8%
6	Netherlands	16	2.1%
7	Canada	16	2.1%
8	United Kingdom	15	1.9%
9	Bulgaria	13	1.7%
10	Korea, Republic of	11	1.4%
11	Singapore	11	1.4%
12	Russia	9	1.2%
13	Hong Kong	9	1.2%
14	Mexico	7	0.9%
15	Sweden	7	0.9%
16	Turkey	6	0.8%
17	Czech Republic	6	0.8%
18	Ireland	5	0.6%
19	Cyprus	4	0.5%
20	Cote D'ivoire	3	0.4%
21	Thailand	3	0.4%
22	Switzerland	3	0.4%
23	Spain	2	0.3%
24	Portugal	2	0.3%
25	Colombia	2	0.3%
26	Brazil	2	0.3%
27	Indonesia	2	0.3%
28	Iran, Islamic Republic of	2	0.3%
29	Denmark	2	0.3%
30	Australia	1	0.1%
31	Belgium	1	0.1%
32	Ukraine	1	0.1%
33	Taiwan	1	0.1%
34	Montenegro	1	0.1%
35	Lithuania	1	0.1%
36	Saudi Arabia	1	0.1%
37	Poland	1	0.1%