Rank	Countries/Territories	Count	Percent
1	United States	397	42.3%
2	China	196	20.9%
3	Germany	79	8.4%
4	Japan	47	5%
5	Singapore	33	3.5%
6	Iran, Islamic Republic of	33	3.5%
7	Russia	26	2.8%
8	France	15	1.6%
9	Taiwan	14	1.5%
10	Nigeria	9	1%
11	Canada	9	1%
12	India	8	0.9%
13	Malaysia	8	0.9%
14	Korea, Republic of	6	0.6%
15	Indonesia	6	0.6%
16	Cyprus	5	0.5%
17	Australia	5	0.5%
18	Pakistan	5	0.5%
19	United Kingdom	4	0.4%
20	Thailand	3	0.3%
21	Netherlands	3	0.3%
22	Greece	3	0.3%
23	Ireland	2	0.2%
24	Israel	2	0.2%
25	Argentina	2	0.2%
26	Cameroon	2	0.2%
27	Ethiopia	2	0.2%
28	Portugal	2	0.2%
29	Turkey	2	0.2%
30	Sweden	2	0.2%
31	Viet Nam	2	0.2%
32	Switzerland	1	0.1%
33	Ukraine	1	0.1%
34	Romania	1	0.1%
35	Cambodia	1	0.1%
36	Italy	1	0.1%
37	Iraq	1	0.1%
38	Hong Kong	1	0.1%