Rank	Countries/Territories	Count	Percent
1	United States	476	45.1%
2	China	273	25.9%
3	Germany	76	7.2%
4	Korea, Republic of	35	3.3%
5	France	34	3.2%
6		21	2%
7	Japan	17	1.6%
8	Russia	16	1.5%
9	Singapore	14	1.3%
10	Cyprus	11	1%
11	Greece	9	0.9%
12	Hong Kong	9	0.9%
13	Switzerland	7	0.7%
14	Netherlands	6	0.6%
15	Poland	6	0.6%
16	Canada	6	0.6%
17	Belgium	5	0.5%
18	Denmark	4	0.4%
19	India	4	0.4%
20	Taiwan	4	0.4%
21	Slovakia	4	0.4%
22	Romania	3	0.3%
23	Egypt	3	0.3%
24	Brazil	2	0.2%
25	Bangladesh	2	0.2%
26	Pakistan	2	0.2%
27	Tanzania, United Republic of	2	0.2%
28	Ukraine	2	0.2%
29	United Kingdom	2	0.2%
30	Malaysia	1	0.1%