Rank	Countries/Territories	Count	Percent
1	United States	445	45.7%
2	China	209	21.5%
3	Germany	95	9.8%
4	Russia	53	5.4%
5	Canada	28	2.9%
6	France	14	1.4%
7	Bulgaria	13	1.3%
8	India	13	1.3%
9	Netherlands	9	0.9%
10	Latvia	9	0.9%
11	Japan	8	0.8%
12	United Kingdom	7	0.7%
13	Singapore	7	0.7%
14	Australia	7	0.7%
15	Cyprus	6	0.6%
16	Lithuania	6	0.6%
17	Morocco	5	0.5%
18	South Africa	5	0.5%
19	Senegal	4	0.4%
20	Philippines	3	0.3%
21	Nigeria	3	0.3%
22	Norway	3	0.3%
23	Iran, Islamic Republic of	2	0.2%
24	Bangladesh	2	0.2%
25	Argentina	2	0.2%
26	Qatar	2	0.2%
27	Romania	2	0.2%
28	Spain	2	0.2%
29	Thailand	2	0.2%
30	Ukraine	2	0.2%
31	Turkey	1	0.1%
32	Switzerland	1	0.1%
33	Taiwan	1	0.1%
34	Finland	1	0.1%
35	Italy	1	0.1%
36	Pakistan	1	0.1%