Rank	Countries/Territories	Count	Percent
1	United States	271	40.2%
2	China	167	24.8%
3	Germany	68	10.1%
4	France	25	3.7%
5	Bulgaria	21	3.1%
6	Netherlands	14	2.1%
7	Korea, Republic of	13	1.9%
8	Nigeria	9	1.3%
9	Turkey	8	1.2%
10	Latvia	7	1%
11	Taiwan	7	1%
12	Cyprus	7	1%
13	Australia	6	0.9%
14	Canada	5	0.7%
15	Singapore	5	0.7%
16	Hong Kong	3	0.4%
17	Denmark	3	0.4%
18	Sweden	3	0.4%
19	United Kingdom	3	0.4%
20	Ukraine	2	0.3%
21	Cote D'ivoire	2	0.3%
22	Cambodia	2	0.3%
23	Ireland	2	0.3%
24	Ghana	2	0.3%
25	Slovenia	2	0.3%
26	Romania	2	0.3%
27	Russia	2	0.3%
28	Rwanda	2	0.3%
29	Philippines	2	0.3%
30	Poland	1	0.1%
31	Puerto Rico	1	0.1%
32	Lithuania	1	0.1%
33	Mongolia	1	0.1%
34	Saudi Arabia	1	0.1%
35	Thailand	1	0.1%
36	Japan	1	0.1%
37	Iran, Islamic Republic of	1	0.1%
38	Bangladesh	1	0.1%