Rank	Countries/Territories	Count	Percent
1	United States	496	43.1%
2	China	331	28.8%
3	Germany	75	6.5%
4	Iran, Islamic Republic of	55	4.8%
5	United Kingdom	44	3.8%
6	India	26	2.3%
7	Canada	14	1.2%
8	France	11	1%
9	Australia	10	0.9%
10	Japan	10	0.9%
11	Netherlands	9	0.8%
12	Malaysia	6	0.5%
13	Turkey	6	0.5%
14	Russia	5	0.4%
15	Ireland	5	0.4%
16	Hungary	4	0.3%
17	Greece	3	0.3%
18	Hong Kong	3	0.3%
19	Israel	3	0.3%
20	Argentina	3	0.3%
21	Cyprus	3	0.3%
22	Pakistan	3	0.3%
23	Portugal	3	0.3%
24	Spain	3	0.3%
25	Switzerland	3	0.3%
26	Ukraine	2	0.2%
27	Singapore	2	0.2%
28	Nigeria	2	0.2%
29	Egypt	2	0.2%
30	Korea, Republic of	2	0.2%
31	Armenia	1	0.1%
32	Belgium	1	0.1%
33	Norway	1	0.1%
34	Mexico	1	0.1%
35	South Africa	1	0.1%
36	United Arab Emirates	1	0.1%
37	Taiwan	1	0.1%