Rank	Countries/Territories	Count	Percent
1	United States	577	54.5%
2	China	262	24.7%
3	Germany	77	7.3%
4	Canada	19	1.8%
5	Ukraine	17	1.6%
6	Switzerland	16	1.5%
7	Japan	12	1.1%
8	Netherlands	11	1%
9	Singapore	10	0.9%
10	India	10	0.9%
11	France	9	0.8%
12	Korea, Republic of	6	0.6%
13	Poland	4	0.4%
14	Sweden	3	0.3%
15	Ireland	3	0.3%
16	Cyprus	3	0.3%
17	Denmark	2	0.2%
18	Hong Kong	2	0.2%
19	Australia	2	0.2%
20	Bangladesh	2	0.2%
21	Jamaica	2	0.2%
22	United Kingdom	2	0.2%
23	Taiwan	1	0.1%
24	Russia	1	0.1%
25	South Africa	1	0.1%
26	Iran, Islamic Republic of	1	0.1%
27	Malaysia	1	0.1%
28	Mexico	1	0.1%
29	Brazil	1	0.1%
30	Argentina	1	0.1%