Rank	Countries/Territories	Count	Percent
1	United States	580	49.4%
2	China	252	21.5%
3	Germany	111	9.5%
4	Russia	34	2.9%
5	Canada	23	2%
6	Netherlands	21	1.8%
7	Japan	20	1.7%
8	France	17	1.4%
9	Ireland	14	1.2%
10	Hong Kong	13	1.1%
11	Singapore	13	1.1%
12	United Kingdom	10	0.9%
13	India	9	0.8%
14	Australia	8	0.7%
15	Cyprus	7	0.6%
16	Philippines	6	0.5%
17	Iran, Islamic Republic of	5	0.4%
18	Ukraine	4	0.3%
19	Argentina	3	0.3%
20	Brazil	2	0.2%
21	Bulgaria	2	0.2%
22	Georgia	2	0.2%
23	South Africa	2	0.2%
24	Taiwan	2	0.2%
25	Palestine, State of	2	0.2%
26	Peru	1	0.1%
27	Macao	1	0.1%
28	Malaysia	1	0.1%
29	New Zealand	1	0.1%
30	Pakistan	1	0.1%
31	Thailand	1	0.1%
32	United Arab Emirates	1	0.1%
33	Greece	1	0.1%
34	Indonesia	1	0.1%
35	Israel	1	0.1%
36	Bangladesh	1	0.1%