Rank	Countries/Territories	Count	Percent
1	United States	207	34.8%
2	China	191	32.2%
3	Germany	56	9.4%
4	India	25	4.2%
5	Iran, Islamic Republic of	17	2.9%
6	Singapore	15	2.5%
7	Pakistan	11	1.9%
8	France	9	1.5%
9	Japan	8	1.3%
10	Malaysia	7	1.2%
11	Cyprus	5	0.8%
12	Egypt	5	0.8%
13	Switzerland	4	0.7%
14	Portugal	3	0.5%
15	Mexico	3	0.5%
16	Netherlands	3	0.5%
17	Indonesia	3	0.5%
18	Korea, Republic of	3	0.5%
19	Kuwait	3	0.5%
20	Colombia	2	0.3%
21	Australia	2	0.3%
22	Brazil	2	0.3%
23	Canada	2	0.3%
24	Russia	2	0.3%
25	Ukraine	2	0.3%
26	United Kingdom	2	0.3%
27	Thailand	1	0.2%
28	Argentina	1	0.2%