Rank	Countries/Territories	Count	Percent
1	United States	250	32.1%
2	China	195	25.1%
3	Germany	77	9.9%
4	France	46	5.9%
5	Canada	25	3.2%
6	Switzerland	20	2.6%
7	Korea, Republic of	19	2.4%
8	India	17	2.2%
9	Ukraine	15	1.9%
10		10	1.3%
11	Singapore	9	1.2%
12	Morocco	8	1%
13	Japan	8	1%
14	United Kingdom	7	0.9%
15	Iran, Islamic Republic of	6	0.8%
16	Cyprus	6	0.8%
17	Australia	5	0.6%
18	Netherlands	5	0.6%
19	Romania	5	0.6%
20	Russia	4	0.5%
21	Indonesia	4	0.5%
22	Algeria	3	0.4%
23	Malaysia	3	0.4%
24	Mexico	3	0.4%
25	Viet Nam	3	0.4%
26	Norway	2	0.3%
27	Portugal	2	0.3%
28	Venezuela, Bolivarian Republic of	2	0.3%
29	South Africa	2	0.3%
30	Sweden	2	0.3%
31	Ethiopia	2	0.3%
32	Greece	2	0.3%
33	Kenya	2	0.3%
34	Ireland	2	0.3%
35	Israel	2	0.3%
36	Italy	1	0.1%
37	Hong Kong	1	0.1%
38	Thailand	1	0.1%
39	Turkey	1	0.1%
40	Nepal	1	0.1%