Rank	Countries/Territories	Count	Percent
1	United States	479	42.2%
2	China	225	19.8%
3	Germany	166	14.6%
4	Russia	80	7%
5	Canada	32	2.8%
6	India	26	2.3%
7	France	22	1.9%
8	Cyprus	13	1.1%
9	Japan	12	1.1%
10	Netherlands	10	0.9%
11	Korea, Republic of	9	0.8%
12	Australia	6	0.5%
13	Romania	6	0.5%
14	Switzerland	6	0.5%
15	Taiwan	5	0.4%
16	Singapore	4	0.4%
17	Ukraine	3	0.3%
18	United Kingdom	3	0.3%
19	Yemen	2	0.2%
20	Saudi Arabia	2	0.2%
21	Thailand	2	0.2%
22	Israel	2	0.2%
23	Italy	2	0.2%
24	Malaysia	2	0.2%
25	Mongolia	2	0.2%
26	Indonesia	2	0.2%
27	Iran, Islamic Republic of	1	0.1%
28	Ireland	1	0.1%
29	Bangladesh	1	0.1%
30	Argentina	1	0.1%
31	Hong Kong	1	0.1%
32	Norway	1	0.1%
33	Poland	1	0.1%
34	Portugal	1	0.1%
35	Turkey	1	0.1%
36	South Africa	1	0.1%
37	Spain	1	0.1%
38	Viet Nam	1	0.1%