Rank	Countries/Territories	Count	Percent
1	United States	312	44.4%
2	China	150	21.3%
3	Germany	43	6.1%
4	India	31	4.4%
5	France	22	3.1%
6	Switzerland	13	1.8%
7	Ireland	12	1.7%
8	Korea, Republic of	11	1.6%
9	Ethiopia	11	1.6%
10	United Kingdom	10	1.4%
11	Netherlands	9	1.3%
12	Japan	9	1.3%
13	Russia	8	1.1%
14	Malaysia	7	1%
15	Australia	7	1%
16	Argentina	6	0.9%
17	Canada	6	0.9%
18	Singapore	6	0.9%
19	Cyprus	5	0.7%
20	Ghana	4	0.6%
21	Sweden	4	0.6%
22	Pakistan	3	0.4%
23	Peru	2	0.3%
24	Thailand	2	0.3%
25	Ukraine	2	0.3%
26	Zimbabwe	2	0.3%
27	Indonesia	2	0.3%
28	Cameroon	1	0.1%
29	Somalia	1	0.1%
30	Philippines	1	0.1%
31	Paraguay	1	0.1%