Rank	Countries/Territories	Count	Percent
1	United States	532	43.5%
2	China	320	26.2%
3	Germany	191	15.6%
4	Canada	32	2.6%
5	Japan	15	1.2%
6	Singapore	15	1.2%
7	Pakistan	14	1.1%
8	India	12	1%
9	Australia	11	0.9%
10	France	11	0.9%
11	Cyprus	9	0.7%
12	Netherlands	8	0.7%
13	Malaysia	6	0.5%
14	United Kingdom	6	0.5%
15	Iran, Islamic Republic of	4	0.3%
16	Hong Kong	3	0.2%
17	Brazil	3	0.2%
18	Moldova, Republic of	3	0.2%
19	Norway	3	0.2%
20	Poland	3	0.2%
21	Saudi Arabia	2	0.2%
22	Peru	2	0.2%
23	Spain	2	0.2%
24	Sweden	2	0.2%
25	Belgium	2	0.2%
26	Ireland	2	0.2%
27	Korea, Republic of	2	0.2%
28	Indonesia	1	0.1%
29	Denmark	1	0.1%
30	Gabon	1	0.1%
31	Switzerland	1	0.1%
32	Ukraine	1	0.1%
33	Philippines	1	0.1%
34	Mexico	1	0.1%