Rank	Countries/Territories	Count	Percent
1	United States	469	42.6%
2	China	313	28.4%
3	Germany	55	5%
4	Iran, Islamic Republic of	40	3.6%
5	Canada	26	2.4%
6	Russia	24	2.2%
7	India	23	2.1%
8	Brazil	19	1.7%
9	Italy	12	1.1%
10	Singapore	10	0.9%
11	Taiwan	10	0.9%
12	Croatia	10	0.9%
13	Spain	9	0.8%
14	Japan	9	0.8%
15	Ireland	8	0.7%
16	Hong Kong	7	0.6%
17	Netherlands	7	0.6%
18	Colombia	6	0.5%
19	Cyprus	5	0.5%
20	Australia	5	0.5%
21	Mexico	5	0.5%
22	United Kingdom	4	0.4%
23	Sweden	3	0.3%
24	Korea, Republic of	3	0.3%
25	Morocco	2	0.2%
26	Portugal	2	0.2%
27	Turkey	2	0.2%
28	Argentina	2	0.2%
29	Viet Nam	2	0.2%
30	Bangladesh	1	0.1%
31	Denmark	1	0.1%
32	France	1	0.1%
33	Ukraine	1	0.1%
34	Switzerland	1	0.1%
35	Thailand	1	0.1%
36	Philippines	1	0.1%
37	Poland	1	0.1%
38	Slovakia	1	0.1%