Rank	Countries/Territories	Count	Percent
1	United States	145	29%
2	China	141	28.2%
3	France	71	14.2%
4	Germany	30	6%
5	Bulgaria	16	3.2%
6	Russia	13	2.6%
7	Netherlands	12	2.4%
8	United Kingdom	8	1.6%
9	Canada	8	1.6%
10	Korea, Republic of	7	1.4%
11	Thailand	5	1%
12	Singapore	4	0.8%
13	South Africa	3	0.6%
14	Ukraine	3	0.6%
15	Lithuania	3	0.6%
16	Mauritius	3	0.6%
17	Iran, Islamic Republic of	2	0.4%
18	Australia	2	0.4%
19	Cyprus	2	0.4%
20	Viet Nam	2	0.4%
21	Japan	2	0.4%
22	Nigeria	2	0.4%
23	Philippines	2	0.4%
24	Poland	2	0.4%
25	Portugal	2	0.4%
26	Romania	2	0.4%
27	Switzerland	1	0.2%
28	Turkey	1	0.2%
29	Czech Republic	1	0.2%
30	Cote D'ivoire	1	0.2%
31	Bangladesh	1	0.2%
32	Cambodia	1	0.2%
33	Ireland	1	0.2%
34	Mongolia	1	0.2%