Rank	Countries/Territories	Count	Percent
1	United States	648	39.4%
2	China	461	28%
3	Germany	122	7.4%
4	India	73	4.4%
5	Iran, Islamic Republic of	38	2.3%
6	Russia	31	1.9%
7	Canada	30	1.8%
8	France	28	1.7%
9	Japan	20	1.2%
10	Hong Kong	15	0.9%
11	Australia	13	0.8%
12	Ireland	13	0.8%
13	United Kingdom	13	0.8%
14	Netherlands	11	0.7%
15	Colombia	11	0.7%
16	Peru	10	0.6%
17	Singapore	10	0.6%
18	Turkey	7	0.4%
19	Malaysia	7	0.4%
20	Cyprus	7	0.4%
21	Ecuador	6	0.4%
22	El Salvador	6	0.4%
23	Norway	6	0.4%
24	Korea, Republic of	6	0.4%
25	Romania	5	0.3%
26	Indonesia	4	0.2%
27	Taiwan	4	0.2%
28	Yemen	4	0.2%
29	Cote D'ivoire	3	0.2%
30	Portugal	3	0.2%
31	Senegal	3	0.2%
32	Pakistan	3	0.2%
33	Israel	2	0.1%
34	Poland	2	0.1%
35	Egypt	2	0.1%
36	Spain	2	0.1%
37	Switzerland	2	0.1%
38	Tanzania, United Republic of	1	0.1%
39	Thailand	1	0.1%
40	Uganda	1	0.1%
41	Ukraine	1	0.1%
42	Viet Nam	1	0.1%
43	Ethiopia	1	0.1%
44	Denmark	1	0.1%
45	Bangladesh	1	0.1%
46	Burundi	1	0.1%
47	Argentina	1	0.1%
48	Philippines	1	0.1%
49	Luxembourg	1	0.1%
50	Mexico	1	0.1%