Rank	Countries/Territories	Count	Percent
1	United States	561	46.8%
2	China	216	18%
3	Germany	81	6.8%
4	Japan	34	2.8%
5	India	32	2.7%
6	United Kingdom	31	2.6%
7	Romania	19	1.6%
8	Singapore	17	1.4%
9	Italy	14	1.2%
10	Korea, Republic of	13	1.1%
11	Netherlands	13	1.1%
12	Canada	12	1%
13	Ukraine	12	1%
14	Austria	11	0.9%
15	Brazil	10	0.8%
16	France	10	0.8%
17	Iran, Islamic Republic of	10	0.8%
18	South Africa	9	0.8%
19	Cyprus	9	0.8%
20	Spain	8	0.7%
21	Ireland	8	0.7%
22	Poland	7	0.6%
23	Turkey	7	0.6%
24	Trinidad and Tobago	7	0.6%
25	Mexico	6	0.5%
26	Finland	4	0.3%
27	Hong Kong	4	0.3%
28	Australia	4	0.3%
29	Belgium	3	0.3%
30	Taiwan	3	0.3%
31	Thailand	2	0.2%
32	Russia	2	0.2%
33	Cabo Verde	2	0.2%
34	Israel	2	0.2%
35	Portugal	2	0.2%
36	Sweden	2	0.2%
37	Switzerland	2	0.2%
38	Pakistan	1	0.1%
39	Bulgaria	1	0.1%
40	Argentina	1	0.1%
41	Bangladesh	1	0.1%
42	Hungary	1	0.1%
43	Greece	1	0.1%
44	Egypt	1	0.1%
45	Tunisia	1	0.1%
46	Viet Nam	1	0.1%