Rank	Countries/Territories	Count	Percent
1	United States	421	52%
2	China	178	22%
3	Germany	58	7.2%
4	India	12	1.5%
5	Japan	12	1.5%
6	Netherlands	12	1.5%
7	Canada	10	1.2%
8	Australia	9	1.1%
9	Korea, Republic of	9	1.1%
10	Chile	8	1%
11	Iran, Islamic Republic of	6	0.7%
12	Singapore	6	0.7%
13	Norway	6	0.7%
14	Romania	5	0.6%
15	Russia	5	0.6%
16	Hong Kong	5	0.6%
17	Cyprus	5	0.6%
18	Greece	4	0.5%
19	United Kingdom	4	0.5%
20	Peru	3	0.4%
21	France	3	0.4%
22	Italy	3	0.4%
23	Poland	2	0.2%
24	South Africa	2	0.2%
25	Sweden	2	0.2%
26	Ireland	2	0.2%
27	Belgium	2	0.2%
28	Taiwan	2	0.2%
29	Turkey	2	0.2%
30	Ukraine	1	0.1%
31	Uzbekistan	1	0.1%
32	Viet Nam	1	0.1%
33	Brazil	1	0.1%
34	Bangladesh	1	0.1%
35	Egypt	1	0.1%
36	Israel	1	0.1%
37	Hungary	1	0.1%
38	Switzerland	1	0.1%
39	Spain	1	0.1%
40	Lebanon	1	0.1%
41	Jordan	1	0.1%