Rank	Countries/Territories	Count	Percent
1	United States	394	44.2%
2	China	171	19.2%
3	Germany	56	6.3%
4	Japan	31	3.5%
5	United Kingdom	29	3.3%
6	Romania	19	2.1%
7	India	17	1.9%
8	Singapore	14	1.6%
9	Korea, Republic of	13	1.5%
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	Canada	8	0.9%
18	Ireland	7	0.8%
19	Poland	7	0.8%
20	Trinidad and Tobago	7	0.8%
21	Turkey	6	0.7%
22	Brazil	6	0.7%
23	France	5	0.6%
24	Hong Kong	3	0.3%
25	Belgium	3	0.3%
26	Mexico	3	0.3%
27	Taiwan	3	0.3%
28	Russia	2	0.2%
29	Sweden	2	0.2%
30	Switzerland	2	0.2%
31	Israel	2	0.2%
32	Australia	2	0.2%
33	Cabo Verde	2	0.2%
34	Hungary	1	0.1%
35	Greece	1	0.1%
36	Bangladesh	1	0.1%
37	Egypt	1	0.1%
38	Finland	1	0.1%
39	Portugal	1	0.1%
40	Thailand	1	0.1%
41	Ukraine	1	0.1%
42	Tunisia	1	0.1%
43	Viet Nam	1	0.1%