Rank	Countries/Territories	Count	Percent
1	United States	462	44.5%
2	China	256	24.6%
3	Germany	83	8%
4	Canada	34	3.3%
5	Korea, Republic of	28	2.7%
6	India	20	1.9%
7	Singapore	19	1.8%
8	Japan	17	1.6%
9	Italy	10	1%
10	Iran, Islamic Republic of	10	1%
11	France	9	0.9%
12	Netherlands	9	0.9%
13	Poland	8	0.8%
14	Australia	8	0.8%
15	Philippines	7	0.7%
16	Ukraine	6	0.6%
17	Indonesia	6	0.6%
18	Russia	5	0.5%
19	Morocco	4	0.4%
20	Argentina	4	0.4%
21	Hong Kong	4	0.4%
22	Cyprus	4	0.4%
23	Latvia	3	0.3%
24	Malaysia	3	0.3%
25	Pakistan	3	0.3%
26	United Kingdom	3	0.3%
27	South Africa	2	0.2%
28	Romania	2	0.2%
29	Turkey	2	0.2%
30	Switzerland	1	0.1%
31	Taiwan	1	0.1%
32	Slovakia	1	0.1%
33	Mauritius	1	0.1%
34	Mexico	1	0.1%
35	Ireland	1	0.1%
36	Denmark	1	0.1%
37	Cambodia	1	0.1%