Rank	Countries/Territories	Count	Percent
1	China	301	34.9%
2	United States	248	28.7%
3	Bulgaria	61	7.1%
4	Taiwan	36	4.2%
5	Singapore	19	2.2%
6	Canada	19	2.2%
7	Germany	18	2.1%
8	Japan	17	2%
9	South Africa	11	1.3%
10	Netherlands	11	1.3%
11	Mongolia	11	1.3%
12	Korea, Republic of	10	1.2%
13	France	9	1%
14	Philippines	8	0.9%
15	Thailand	8	0.9%
16	Lithuania	7	0.8%
17	Hong Kong	7	0.8%
18	United Kingdom	6	0.7%
19	Poland	5	0.6%
20	Nigeria	4	0.5%
21	Sweden	4	0.5%
22	India	4	0.5%
23	Iran, Islamic Republic of	4	0.5%
24	Latvia	3	0.3%
25	Cote D'ivoire	3	0.3%
26	Cambodia	3	0.3%
27	Portugal	3	0.3%
28	Mauritius	3	0.3%
29	Ukraine	3	0.3%
30	Zambia	2	0.2%
31	Moldova, Republic of	2	0.2%
32	Turkey	2	0.2%
33	Argentina	2	0.2%
34	Brazil	2	0.2%
35	Ireland	2	0.2%
36	Malaysia	1	0.1%
37	Australia	1	0.1%
38	Switzerland	1	0.1%
39	Myanmar	1	0.1%
40	Russia	1	0.1%