Rank	Countries/Territories	Count	Percent
1	United States	159	37%
2	China	72	16.7%
3	Germany	50	11.6%
4	Canada	17	4%
5	France	10	2.3%
6	Japan	10	2.3%
7	Ireland	10	2.3%
8	United Kingdom	10	2.3%
9	Russia	8	1.9%
10	Netherlands	7	1.6%
11	Peru	7	1.6%
12	India	6	1.4%
13	Ethiopia	5	1.2%
14	Singapore	5	1.2%
15	Syrian Arab Republic	4	0.9%
16	Romania	4	0.9%
17	Israel	3	0.7%
18	Ecuador	3	0.7%
19	Indonesia	3	0.7%
20	Thailand	3	0.7%
21	Ukraine	2	0.5%
22	Zimbabwe	2	0.5%
23	Egypt	2	0.5%
24	Austria	2	0.5%
25	Cyprus	2	0.5%
26	Argentina	2	0.5%
27	Philippines	2	0.5%
28	Jordan	2	0.5%
29	Malaysia	2	0.5%
30	Saudi Arabia	2	0.5%
31	Taiwan	2	0.5%
32	South Africa	2	0.5%
33	Sri Lanka	1	0.2%
34	Serbia	1	0.2%
35	Korea, Republic of	1	0.2%
36	Lithuania	1	0.2%
37	Australia	1	0.2%
38	Albania	1	0.2%
39	Algeria	1	0.2%
40	Denmark	1	0.2%
41	Ghana	1	0.2%
42	Hong Kong	1	0.2%