Rank	Countries/Territories	Count	Percent
1	United States	374	33.8%
2	China	283	25.6%
3	Germany	152	13.7%
4	Netherlands	72	6.5%
5	Canada	38	3.4%
6	United Kingdom	34	3.1%
7	France	26	2.3%
8	Japan	14	1.3%
9	Bulgaria	12	1.1%
10	Ireland	10	0.9%
11	Cote D'ivoire	8	0.7%
12	Mauritius	7	0.6%
13	India	7	0.6%
14	Australia	6	0.5%
15	Viet Nam	6	0.5%
16	Philippines	5	0.5%
17	Spain	5	0.5%
18	Cyprus	5	0.5%
19	Mongolia	4	0.4%
20	Russia	4	0.4%
21	Singapore	4	0.4%
22	Nigeria	4	0.4%
23	Thailand	4	0.4%
24	Ukraine	4	0.4%
25	Italy	3	0.3%
26	Hong Kong	3	0.3%
27	Bangladesh	2	0.2%
28	Argentina	2	0.2%
29	Poland	2	0.2%
30	Romania	2	0.2%
31	Sweden	2	0.2%
32	Switzerland	2	0.2%
33	Iran, Islamic Republic of	1	0.1%