Rank	Countries/Territories	Count	Percent
1	United States	626	54.3%
2	China	252	21.9%
3	Germany	68	5.9%
4	India	25	2.2%
5	Russia	24	2.1%
6	Spain	17	1.5%
7	Japan	14	1.2%
8	France	14	1.2%
9	Latvia	12	1%
10	Netherlands	10	0.9%
11	Canada	9	0.8%
12	Brazil	9	0.8%
13	Hong Kong	8	0.7%
14	Norway	6	0.5%
15	Turkey	6	0.5%
16	United Kingdom	6	0.5%
17	Iran, Islamic Republic of	5	0.4%
18	Mexico	4	0.3%
19	Pakistan	3	0.3%
20	Taiwan	3	0.3%
21	Serbia	3	0.3%
22	Bulgaria	3	0.3%
23	Belgium	3	0.3%
24	Cuba	3	0.3%
25	Cyprus	2	0.2%
26	Ecuador	2	0.2%
27	Korea, Republic of	2	0.2%
28	Jamaica	2	0.2%
29	Luxembourg	2	0.2%
30	Viet Nam	2	0.2%
31	Portugal	1	0.1%
32	Romania	1	0.1%
33	Seychelles	1	0.1%
34	Singapore	1	0.1%
35	Italy	1	0.1%
36	Estonia	1	0.1%
37	Bangladesh	1	0.1%