Rank	Countries/Territories	Count	Percent
1	United States	233	39.4%
2	China	178	30.1%
3	Germany	56	9.5%
4	United Kingdom	13	2.2%
5	France	12	2%
6	Russia	12	2%
7	Canada	9	1.5%
8	Greece	8	1.4%
9	Ireland	7	1.2%
10	Japan	6	1%
11	Korea, Republic of	6	1%
12	India	6	1%
13	Iran, Islamic Republic of	6	1%
14	Cyprus	5	0.8%
15	Singapore	5	0.8%
16	Viet Nam	4	0.7%
17	Netherlands	4	0.7%
18	Switzerland	3	0.5%
19	Romania	3	0.5%
20	Pakistan	2	0.3%
21	Malaysia	2	0.3%
22	Mexico	2	0.3%
23	Morocco	1	0.2%
24	New Zealand	1	0.2%
25	Ecuador	1	0.2%
26	Chile	1	0.2%
27	Australia	1	0.2%
28	Brazil	1	0.2%
29	Cambodia	1	0.2%
30	Poland	1	0.2%
31	Turkey	1	0.2%
32	Ukraine	1	0.2%