Rank	Countries/Territories	Count	Percent
1	United States	227	37.1%
2	China	131	21.4%
3	Germany	120	19.6%
4	United Kingdom	16	2.6%
5	Canada	12	2%
6	Japan	10	1.6%
7	India	9	1.5%
8	Iran, Islamic Republic of	9	1.5%
9	Ireland	9	1.5%
10	Denmark	9	1.5%
11	Korea, Republic of	7	1.1%
12	Netherlands	6	1%
13	France	6	1%
14	Singapore	5	0.8%
15	Lithuania	4	0.7%
16	Cyprus	4	0.7%
17	Australia	3	0.5%
18	Switzerland	3	0.5%
19	Russia	3	0.5%
20	Slovenia	2	0.3%
21	Spain	2	0.3%
22	Taiwan	2	0.3%
23	Uganda	2	0.3%
24	Poland	2	0.3%
25	Kazakhstan	2	0.3%
26	Hong Kong	2	0.3%
27	Italy	1	0.2%
28	Belgium	1	0.2%
29	Argentina	1	0.2%
30	Malaysia	1	0.2%
31	Ukraine	1	0.2%