Rank	Countries/Territories	Count	Percent
1	United States	570	42%
2	China	323	23.8%
3	Germany	141	10.4%
4	Spain	35	2.6%
5	India	34	2.5%
6	Switzerland	23	1.7%
7	Korea, Republic of	21	1.5%
8	Japan	20	1.5%
9	Australia	16	1.2%
10	France	16	1.2%
11	Netherlands	15	1.1%
12	United Kingdom	14	1%
13	Ukraine	13	1%
14	Canada	12	0.9%
15	Russia	11	0.8%
16	Hong Kong	9	0.7%
17	Iran, Islamic Republic of	9	0.7%
18	Denmark	7	0.5%
19	Taiwan	7	0.5%
20	Singapore	7	0.5%
21	Romania	7	0.5%
22	Turkey	6	0.4%
23	Iraq	6	0.4%
24	Cyprus	5	0.4%
25	Israel	4	0.3%
26	Sweden	4	0.3%
27	Italy	3	0.2%
28	Egypt	2	0.1%
29	Finland	2	0.1%
30	Serbia	2	0.1%
31	Norway	2	0.1%
32	Venezuela, Bolivarian Republic of	2	0.1%
33	Poland	1	0.1%
34	Qatar	1	0.1%
35	Mexico	1	0.1%
36	Thailand	1	0.1%
37	Bangladesh	1	0.1%
38	Bulgaria	1	0.1%
39	Ireland	1	0.1%
40	Indonesia	1	0.1%