Rank	Countries/Territories	Count	Percent
1	United States	312	36.3%
2	China	296	34.5%
3	Germany	73	8.5%
4	India	33	3.8%
5	France	25	2.9%
6	Latvia	18	2.1%
7		17	2%
8	Canada	14	1.6%
9	Switzerland	12	1.4%
10	Netherlands	7	0.8%
11	Iran, Islamic Republic of	7	0.8%
12	Australia	7	0.8%
13	Norway	5	0.6%
14	Ukraine	4	0.5%
15	Cyprus	4	0.5%
16	Japan	4	0.5%
17	Hong Kong	4	0.5%
18	Belgium	3	0.3%
19	Czech Republic	2	0.2%
20	Bangladesh	2	0.2%
21	Korea, Republic of	2	0.2%
22	United Kingdom	2	0.2%
23	Malaysia	1	0.1%
24	Russia	1	0.1%
25	Spain	1	0.1%
26	Ireland	1	0.1%
27	Argentina	1	0.1%
28	Bulgaria	1	0.1%