Rank	Countries/Territories	Count	Percent
1	United States	491	39.7%
2	China	348	28.1%
3	Germany	97	7.8%
4	India	55	4.4%
5	Romania	34	2.7%
6	Taiwan	31	2.5%
7	Bulgaria	20	1.6%
8	France	18	1.5%
9	Japan	15	1.2%
10	Australia	13	1.1%
11	Canada	12	1%
12	Slovenia	12	1%
13	Netherlands	12	1%
14	Russia	8	0.6%
15	Senegal	8	0.6%
16	Spain	7	0.6%
17	United Kingdom	6	0.5%
18	Singapore	5	0.4%
19	Italy	5	0.4%
20	Cyprus	5	0.4%
21	Hong Kong	4	0.3%
22	Mexico	4	0.3%
23	Turkey	4	0.3%
24	South Africa	4	0.3%
25	Pakistan	3	0.2%
26	Korea, Republic of	3	0.2%
27	Latvia	2	0.2%
28	Malaysia	2	0.2%
29	Ireland	2	0.2%
30	Iran, Islamic Republic of	1	0.1%
31	Kenya	1	0.1%
32	Brazil	1	0.1%
33	Palestine, State of	1	0.1%
34	United Arab Emirates	1	0.1%
35	Sweden	1	0.1%
36	Nigeria	1	0.1%
37	Viet Nam	1	0.1%