Rank	Countries/Territories	Count	Percent
1	United States	361	43.1%
2	China	165	19.7%
3	Germany	56	6.7%
4	United Kingdom	29	3.5%
5	Japan	26	3.1%
6	Romania	19	2.3%
7	India	16	1.9%
8	Singapore	14	1.7%
9	Korea, Republic of	12	1.4%
10	Netherlands	11	1.3%
11	Austria	11	1.3%
12	Iran, Islamic Republic of	10	1.2%
13	Italy	10	1.2%
14	South Africa	8	1%
15	Spain	8	1%
16	Poland	7	0.8%
17	Ireland	7	0.8%
18	Cyprus	7	0.8%
19	Trinidad and Tobago	7	0.8%
20	Turkey	6	0.7%
21	Canada	5	0.6%
22	France	5	0.6%
23	Brazil	4	0.5%
24	Belgium	3	0.4%
25	Mexico	3	0.4%
26	Hong Kong	3	0.4%
27	Taiwan	3	0.4%
28	Russia	2	0.2%
29	Sweden	2	0.2%
30	Switzerland	2	0.2%
31	Australia	2	0.2%
32	Cabo Verde	2	0.2%
33	Israel	2	0.2%
34	Bangladesh	1	0.1%
35	Egypt	1	0.1%
36	Finland	1	0.1%
37	Thailand	1	0.1%
38	Greece	1	0.1%
39	Portugal	1	0.1%
40	Ukraine	1	0.1%
41	Tunisia	1	0.1%
42	Viet Nam	1	0.1%