Rank	Countries/Territories	Count	Percent
1	United States	428	39.3%
2	China	269	24.7%
3	Germany	118	10.8%
4	Spain	32	2.9%
5	India	30	2.8%
6	Switzerland	23	2.1%
7	Korea, Republic of	21	1.9%
8	Japan	16	1.5%
9	France	14	1.3%
10	Netherlands	13	1.2%
11	Ukraine	13	1.2%
12	United Kingdom	10	0.9%
13	Canada	10	0.9%
14	Hong Kong	9	0.8%
15	Iran, Islamic Republic of	9	0.8%
16	Russia	9	0.8%
17	Australia	8	0.7%
18	Denmark	7	0.6%
19	Singapore	7	0.6%
20	Turkey	6	0.6%
21	Taiwan	6	0.6%
22	Romania	4	0.4%
23	Cyprus	4	0.4%
24	Italy	3	0.3%
25	Israel	2	0.2%
26	Egypt	2	0.2%
27	Norway	2	0.2%
28	Serbia	2	0.2%
29	Sweden	2	0.2%
30	Venezuela, Bolivarian Republic of	2	0.2%
31	Thailand	1	0.1%
32	Poland	1	0.1%
33	Qatar	1	0.1%
34	Mexico	1	0.1%
35	Finland	1	0.1%
36	Bangladesh	1	0.1%
37	Ireland	1	0.1%
38	Indonesia	1	0.1%