Rank	Countries/Territories	Count	Percent
1	United States	399	43.8%
2	China	174	19.1%
3	Germany	62	6.8%
4	Japan	32	3.5%
5	United Kingdom	29	3.2%
6	India	19	2.1%
7	Romania	19	2.1%
8	Singapore	14	1.5%
9	Korea, Republic of	13	1.4%
10	Netherlands	11	1.2%
11	Austria	11	1.2%
12	Italy	11	1.2%
13	Iran, Islamic Republic of	10	1.1%
14	South Africa	8	0.9%
15	Spain	8	0.9%
16	Cyprus	8	0.9%
17	Brazil	8	0.9%
18	Canada	8	0.9%
19	Ireland	7	0.8%
20	Poland	7	0.8%
21	Trinidad and Tobago	7	0.8%
22	Turkey	6	0.7%
23	France	5	0.5%
24	Hong Kong	3	0.3%
25	Belgium	3	0.3%
26	Mexico	3	0.3%
27	Taiwan	3	0.3%
28	Thailand	2	0.2%
29	Russia	2	0.2%
30	Sweden	2	0.2%
31	Switzerland	2	0.2%
32	Israel	2	0.2%
33	Australia	2	0.2%
34	Cabo Verde	2	0.2%
35	Hungary	1	0.1%
36	Greece	1	0.1%
37	Bangladesh	1	0.1%
38	Egypt	1	0.1%
39	Finland	1	0.1%
40	Portugal	1	0.1%
41	Ukraine	1	0.1%
42	Tunisia	1	0.1%
43	Viet Nam	1	0.1%