Rank	Countries/Territories	Count	Percent
1	United States	663	39.7%
2	China	516	30.9%
3	Germany	157	9.4%
4	Japan	88	5.3%
5	France	43	2.6%
6	Canada	32	1.9%
7	Singapore	23	1.4%
8	Czech Republic	20	1.2%
9	Korea, Republic of	19	1.1%
10	Netherlands	16	1%
11	Russia	14	0.8%
12	Australia	14	0.8%
13	Hong Kong	9	0.5%
14	Ukraine	9	0.5%
15	Cyprus	7	0.4%
16	India	6	0.4%
17	United Kingdom	5	0.3%
18	Taiwan	5	0.3%
19	Argentina	4	0.2%
20	Latvia	3	0.2%
21	Iran, Islamic Republic of	2	0.1%
22	Hungary	2	0.1%
23	Bangladesh	2	0.1%
24	Poland	2	0.1%
25	Norway	2	0.1%
26	Palestine, State of	1	0.1%
27	Turkey	1	0.1%
28	Sweden	1	0.1%
29	Viet Nam	1	0.1%
30	Italy	1	0.1%
31	Malaysia	1	0.1%