Rank	Countries/Territories	Count	Percent
1	United States	436	35.9%
2	China	392	32.3%
3	Germany	84	6.9%
4	Japan	83	6.8%
5	Singapore	41	3.4%
6	Latvia	36	3%
7	Australia	14	1.2%
8	Netherlands	13	1.1%
9	Canada	12	1%
10	Korea, Republic of	11	0.9%
11	India	11	0.9%
12	Hong Kong	9	0.7%
13	Austria	7	0.6%
14	France	7	0.6%
15	Taiwan	7	0.6%
16	Russia	6	0.5%
17	United Kingdom	6	0.5%
18	Spain	5	0.4%
19	Argentina	5	0.4%
20	Cyprus	3	0.2%
21	Denmark	3	0.2%
22	Italy	3	0.2%
23	Iran, Islamic Republic of	3	0.2%
24	Ukraine	3	0.2%
25	Switzerland	2	0.2%
26	Poland	2	0.2%
27	Romania	2	0.2%
28	Virgin Islands, British	2	0.2%
29	Sweden	1	0.1%
30	United Arab Emirates	1	0.1%
31	Israel	1	0.1%
32	Malaysia	1	0.1%
33	Belgium	1	0.1%