Rank	Countries/Territories	Count	Percent
1	United States	323	35.9%
2	China	237	26.3%
3	Germany	110	12.2%
4	Poland	45	5%
5	India	18	2%
6	Switzerland	16	1.8%
7	Spain	14	1.6%
8	Ukraine	13	1.4%
9	Ireland	12	1.3%
10	Netherlands	12	1.3%
11	Canada	12	1.3%
12	Australia	11	1.2%
13	Singapore	11	1.2%
14	Japan	8	0.9%
15	Korea, Republic of	8	0.9%
16	United Kingdom	7	0.8%
17	Lithuania	5	0.6%
18	Indonesia	4	0.4%
19	Hong Kong	4	0.4%
20	Hungary	4	0.4%
21	Italy	4	0.4%
22	Denmark	3	0.3%
23	Finland	3	0.3%
24	France	2	0.2%
25	Cyprus	2	0.2%
26	Mexico	2	0.2%
27	Mongolia	2	0.2%
28	Taiwan	2	0.2%
29	Turkey	1	0.1%
30	Oman	1	0.1%
31	Israel	1	0.1%
32	Iran, Islamic Republic of	1	0.1%
33	Belgium	1	0.1%
34	Chad	1	0.1%