Rank	Countries/Territories	Count	Percent
1	United States	529	41%
2	China	398	30.9%
3	Germany	98	7.6%
4	Argentina	60	4.7%
5	United Kingdom	29	2.2%
6	Japan	23	1.8%
7		18	1.4%
8	Canada	16	1.2%
9	Ukraine	14	1.1%
10	Ireland	11	0.9%
11	Singapore	11	0.9%
12	France	11	0.9%
13	Australia	11	0.9%
14	Netherlands	10	0.8%
15	Cyprus	8	0.6%
16	Korea, Republic of	6	0.5%
17	Iran, Islamic Republic of	5	0.4%
18	Russia	5	0.4%
19	Slovakia	3	0.2%
20	Switzerland	3	0.2%
21	Taiwan	3	0.2%
22	Mongolia	2	0.2%
23	Yemen	2	0.2%
24	Czech Republic	2	0.2%
25	Denmark	2	0.2%
26	Bangladesh	2	0.2%
27	Bulgaria	2	0.2%
28	Cameroon	2	0.2%
29	Malaysia	1	0.1%
30	Hong Kong	1	0.1%
31	India	1	0.1%
32	Poland	1	0.1%