Rank	Countries/Territories	Count	Percent
1	United States	453	41.2%
2	China	286	26%
3	Germany	146	13.3%
4	France	26	2.4%
5	Japan	23	2.1%
6	United Kingdom	21	1.9%
7	Netherlands	15	1.4%
8	Canada	15	1.4%
9	Denmark	14	1.3%
10	India	9	0.8%
11	Iran, Islamic Republic of	9	0.8%
12	Ireland	9	0.8%
13	Korea, Republic of	8	0.7%
14	Singapore	7	0.6%
15	Hong Kong	7	0.6%
16	Kazakhstan	5	0.5%
17	Lithuania	4	0.4%
18	Italy	4	0.4%
19	Cyprus	4	0.4%
20	Australia	3	0.3%
21	Poland	3	0.3%
22	Switzerland	3	0.3%
23	Russia	3	0.3%
24	Taiwan	2	0.2%
25	Uganda	2	0.2%
26	Portugal	2	0.2%
27	Slovenia	2	0.2%
28	Spain	2	0.2%
29	Bangladesh	2	0.2%
30	Bulgaria	2	0.2%
31	Israel	2	0.2%
32	Argentina	1	0.1%
33	Belgium	1	0.1%
34	Romania	1	0.1%
35	Ukraine	1	0.1%
36	Malaysia	1	0.1%
37	Mongolia	1	0.1%
38	Norway	1	0.1%