Rank	Countries/Territories	Count	Percent
1	United States	526	45.3%
2	China	260	22.4%
3	Korea, Republic of	82	7.1%
4	Germany	78	6.7%
5	Bulgaria	74	6.4%
6	Japan	19	1.6%
7	France	18	1.6%
8	Canada	13	1.1%
9	Cyprus	13	1.1%
10	Netherlands	13	1.1%
11	Singapore	5	0.4%
12	United Kingdom	5	0.4%
13	Poland	4	0.3%
14	Chile	4	0.3%
15	Australia	4	0.3%
16	Hong Kong	4	0.3%
17	India	3	0.3%
18	Malaysia	3	0.3%
19	Bangladesh	3	0.3%
20	Philippines	3	0.3%
21	Ukraine	3	0.3%
22	Spain	2	0.2%
23	Taiwan	2	0.2%
24	Togo	2	0.2%
25	Romania	2	0.2%
26	Russia	2	0.2%
27	Cote D'ivoire	2	0.2%
28	Mexico	2	0.2%
29	Mongolia	1	0.1%
30	Latvia	1	0.1%
31	Lithuania	1	0.1%
32	Argentina	1	0.1%
33	South Africa	1	0.1%
34	Portugal	1	0.1%
35	Norway	1	0.1%
36	Pakistan	1	0.1%
37	Sweden	1	0.1%
38	Switzerland	1	0.1%