Rank	Countries/Territories	Count	Percent
1	United States	422	35.7%
2	China	308	26.1%
3	Germany	144	12.2%
4	Korea, Republic of	42	3.6%
5	India	34	2.9%
6	Japan	34	2.9%
7	Australia	24	2%
8		23	1.9%
9	Russia	17	1.4%
10	Ireland	13	1.1%
11	Lithuania	12	1%
12	Switzerland	11	0.9%
13	Moldova, Republic of	10	0.8%
14	Canada	9	0.8%
15	Netherlands	8	0.7%
16	Cyprus	7	0.6%
17	Jordan	6	0.5%
18	Hong Kong	6	0.5%
19	Singapore	6	0.5%
20	Poland	5	0.4%
21	Malaysia	4	0.3%
22	Spain	4	0.3%
23	France	4	0.3%
24	Austria	4	0.3%
25	Italy	3	0.3%
26	Romania	3	0.3%
27	Serbia	2	0.2%
28	Paraguay	2	0.2%
29	Brazil	2	0.2%
30	Ukraine	2	0.2%
31	Argentina	2	0.2%
32	Chile	2	0.2%
33	Viet Nam	2	0.2%
34	Bangladesh	1	0.1%
35	Iran, Islamic Republic of	1	0.1%
36	Uruguay	1	0.1%
37	Slovakia	1	0.1%