Rank	Countries/Territories	Count	Percent
1	United States	569	33.2%
2	China	544	31.8%
3	Japan	90	5.3%
4	Germany	62	3.6%
5	Bulgaria	54	3.2%
6	Netherlands	45	2.6%
7	Singapore	43	2.5%
8	United Kingdom	41	2.4%
9	Indonesia	24	1.4%
10	South Africa	18	1.1%
11	Russia	15	0.9%
12	Iran, Islamic Republic of	15	0.9%
13	France	15	0.9%
14	Hong Kong	14	0.8%
15	Latvia	14	0.8%
16	Romania	12	0.7%
17	Canada	9	0.5%
18	Australia	8	0.5%
19	Philippines	8	0.5%
20	Ireland	8	0.5%
21	Mauritius	8	0.5%
22	Poland	7	0.4%
23	Lithuania	7	0.4%
24	Spain	7	0.4%
25	Turkey	6	0.4%
26	Nigeria	6	0.4%
27	Mexico	6	0.4%
28	Portugal	5	0.3%
29	Morocco	5	0.3%
30	Bangladesh	5	0.3%
31	Argentina	4	0.2%
32	Egypt	4	0.2%
33	Malaysia	4	0.2%
34	Korea, Republic of	4	0.2%
35	India	3	0.2%
36	Brazil	3	0.2%
37	Belgium	3	0.2%
38	Ukraine	3	0.2%
39	Thailand	2	0.1%
40	Benin	2	0.1%
41	Cote D'ivoire	2	0.1%
42	Moldova, Republic of	2	0.1%
43	Mongolia	1	0.1%
44	Macao	1	0.1%
45	Ghana	1	0.1%
46	Togo	1	0.1%
47	Sweden	1	0.1%
48	Switzerland	1	0.1%