Rank	Countries/Territories	Count	Percent
1	United States	521	42.3%
2	China	363	29.5%
3	Germany	112	9.1%
4	France	44	3.6%
5	Korea, Republic of	25	2%
6	Netherlands	20	1.6%
7	Japan	17	1.4%
8	Singapore	12	1%
9	Hong Kong	12	1%
10	Canada	11	0.9%
11	Australia	11	0.9%
12	Togo	10	0.8%
13	United Kingdom	8	0.6%
14	Bulgaria	6	0.5%
15	Cyprus	6	0.5%
16	Malaysia	4	0.3%
17	Nigeria	4	0.3%
18	Viet Nam	4	0.3%
19	Russia	3	0.2%
20	Jordan	3	0.2%
21	Ukraine	3	0.2%
22	South Africa	3	0.2%
23	Greece	3	0.2%
24	Iran, Islamic Republic of	3	0.2%
25	Argentina	3	0.2%
26	Cote D'ivoire	3	0.2%
27	Israel	2	0.2%
28	Italy	2	0.2%
29	Spain	2	0.2%
30	Taiwan	2	0.2%
31	Turkey	2	0.2%
32	Sweden	1	0.1%
33	Romania	1	0.1%
34	Hungary	1	0.1%
35	India	1	0.1%
36	Denmark	1	0.1%
37	Colombia	1	0.1%
38	Bangladesh	1	0.1%