Rank	Countries/Territories	Count	Percent
1	United States	277	35.3%
2	China	169	21.5%
3	Germany	99	12.6%
4	Ukraine	36	4.6%
5	India	27	3.4%
6	Korea, Republic of	18	2.3%
7	France	17	2.2%
8	Canada	15	1.9%
9	Singapore	11	1.4%
10	Spain	11	1.4%
11	Switzerland	11	1.4%
12	Australia	10	1.3%
13	Ireland	9	1.1%
14	Japan	9	1.1%
15	Netherlands	8	1%
16	Brazil	5	0.6%
17	Argentina	4	0.5%
18	Hong Kong	4	0.5%
19	Mongolia	4	0.5%
20	Romania	3	0.4%
21	Italy	3	0.4%
22	United Arab Emirates	3	0.4%
23	United Kingdom	3	0.4%
24	Turkey	2	0.3%
25	Kazakhstan	2	0.3%
26	Lithuania	2	0.3%
27	Mexico	2	0.3%
28	Portugal	2	0.3%
29	Qatar	2	0.3%
30	Iran, Islamic Republic of	2	0.3%
31	Iraq	2	0.3%
32	Cyprus	2	0.3%
33	Czech Republic	1	0.1%
34	Egypt	1	0.1%
35	Bangladesh	1	0.1%
36	Indonesia	1	0.1%
37	Nepal	1	0.1%
38	Poland	1	0.1%
39	Malaysia	1	0.1%
40	Mauritius	1	0.1%
41	Viet Nam	1	0.1%
42	Thailand	1	0.1%
43	Slovenia	1	0.1%