Rank	Countries/Territories	Count	Percent
1	United States	479	44.9%
2	China	329	30.8%
3	Germany	108	10.1%
4	France	26	2.4%
5	Canada	23	2.2%
6	Australia	13	1.2%
7	Nigeria	10	0.9%
8	Cyprus	9	0.8%
9	Bulgaria	8	0.7%
10	Netherlands	8	0.7%
11	Singapore	7	0.7%
12	Spain	7	0.7%
13	Russia	5	0.5%
14	India	4	0.4%
15	Argentina	4	0.4%
16	Japan	3	0.3%
17	South Africa	3	0.3%
18	Switzerland	2	0.2%
19	Norway	2	0.2%
20	Pakistan	2	0.2%
21	Ukraine	2	0.2%
22	Ireland	2	0.2%
23	Austria	2	0.2%
24	Bangladesh	2	0.2%
25	Latvia	1	0.1%
26	Malaysia	1	0.1%
27	Iran, Islamic Republic of	1	0.1%
28	Hong Kong	1	0.1%
29	Hungary	1	0.1%
30	Romania	1	0.1%
31	Taiwan	1	0.1%