Rank	Countries/Territories	Count	Percent
1	United States	324	39.4%
2	China	170	20.7%
3	Germany	44	5.3%
4	Russia	44	5.3%
5	Canada	33	4%
6	Netherlands	32	3.9%
7	Ireland	18	2.2%
8	India	16	1.9%
9	Taiwan	14	1.7%
10	Australia	11	1.3%
11	France	10	1.2%
12	Korea, Republic of	10	1.2%
13	Ukraine	10	1.2%
14	Iran, Islamic Republic of	9	1.1%
15	Singapore	8	1%
16	Romania	7	0.9%
17	Japan	6	0.7%
18	United Kingdom	6	0.7%
19	Brazil	5	0.6%
20	Cyprus	4	0.5%
21	Egypt	4	0.5%
22	Hong Kong	3	0.4%
23	Morocco	3	0.4%
24	Philippines	3	0.4%
25	Thailand	3	0.4%
26	Turkey	2	0.2%
27	Yemen	2	0.2%
28	Sweden	2	0.2%
29	Pakistan	2	0.2%
30	Saudi Arabia	2	0.2%
31	Italy	2	0.2%
32	Malaysia	2	0.2%
33	Belgium	2	0.2%
34	Argentina	1	0.1%
35	Austria	1	0.1%
36	Cote D'ivoire	1	0.1%
37	Estonia	1	0.1%
38	Denmark	1	0.1%
39	Mexico	1	0.1%
40	Mongolia	1	0.1%
41	Lithuania	1	0.1%
42	Poland	1	0.1%
43	South Africa	1	0.1%