Rank	Countries/Territories	Count	Percent
1	United States	431	40.4%
2	China	244	22.8%
3	Germany	68	6.4%
4	India	47	4.4%
5		31	2.9%
6	France	30	2.8%
7	Canada	28	2.6%
8	United Kingdom	15	1.4%
9	Ethiopia	14	1.3%
10	Russia	14	1.3%
11	Switzerland	14	1.3%
12	Japan	13	1.2%
13	Ireland	12	1.1%
14	Netherlands	12	1.1%
15	Korea, Republic of	11	1%
16	Australia	11	1%
17	Cyprus	7	0.7%
18	Malaysia	7	0.7%
19	Singapore	6	0.6%
20	Argentina	6	0.6%
21	Hong Kong	5	0.5%
22	Iran, Islamic Republic of	5	0.5%
23	Sweden	4	0.4%
24	Ghana	4	0.4%
25	Tanzania, United Republic of	4	0.4%
26	Pakistan	3	0.3%
27	Peru	2	0.2%
28	Indonesia	2	0.2%
29	Brazil	2	0.2%
30	Thailand	2	0.2%
31	Ukraine	2	0.2%
32	Zimbabwe	2	0.2%
33	Bulgaria	1	0.1%
34	Cameroon	1	0.1%
35	Belgium	1	0.1%
36	Philippines	1	0.1%
37	Somalia	1	0.1%
38	Taiwan	1	0.1%
39	Paraguay	1	0.1%
40	Nigeria	1	0.1%
41	Norway	1	0.1%
42	Latvia	1	0.1%