Rank	Countries/Territories	Count	Percent
1	United States	278	34.4%
2	China	178	22.1%
3	India	135	16.7%
4	Germany	44	5.5%
5	Japan	44	5.5%
6	Iran, Islamic Republic of	14	1.7%
7	Netherlands	12	1.5%
8	Russia	12	1.5%
9	Saudi Arabia	11	1.4%
10	France	8	1%
11	Canada	8	1%
12	Colombia	6	0.7%
13	United Kingdom	5	0.6%
14	Spain	5	0.6%
15	Singapore	4	0.5%
16	Algeria	4	0.5%
17	Australia	4	0.5%
18	Israel	4	0.5%
19	Italy	4	0.5%
20	Argentina	3	0.4%
21	Ukraine	3	0.4%
22	Taiwan	2	0.2%
23	Thailand	2	0.2%
24	Slovakia	2	0.2%
25	Norway	2	0.2%
26	Ireland	2	0.2%
27	Bulgaria	2	0.2%
28	Greece	2	0.2%
29	Bahrain	1	0.1%
30	Cote D'ivoire	1	0.1%
31	Denmark	1	0.1%
32	Romania	1	0.1%
33	Kuwait	1	0.1%
34	Switzerland	1	0.1%
35	Syrian Arab Republic	1	0.1%