Rank	Countries/Territories	Count	Percent
1	United States	326	34.5%
2	China	290	30.7%
3	Germany	96	10.2%
4	United Kingdom	56	5.9%
5	Netherlands	52	5.5%
6	France	22	2.3%
7	Bulgaria	22	2.3%
8	Canada	11	1.2%
9	Poland	11	1.2%
10	Singapore	9	1%
11	Egypt	8	0.8%
12	Cyprus	5	0.5%
13	Hungary	5	0.5%
14	Philippines	5	0.5%
15	Australia	4	0.4%
16	Hong Kong	3	0.3%
17	Taiwan	2	0.2%
18	Indonesia	2	0.2%
19	Iran, Islamic Republic of	2	0.2%
20	Ireland	2	0.2%
21	Japan	2	0.2%
22	Korea, Republic of	1	0.1%
23	Latvia	1	0.1%
24	Malaysia	1	0.1%
25	Mauritius	1	0.1%
26	Belgium	1	0.1%
27	Ukraine	1	0.1%
28	Nigeria	1	0.1%
29	South Africa	1	0.1%
30	Spain	1	0.1%
31	Switzerland	1	0.1%