Rank	Countries/Territories	Count	Percent
1	United States	625	32.1%
2	China	450	23.1%
3	India	211	10.8%
4	Germany	85	4.4%
5	Canada	66	3.4%
6	Japan	45	2.3%
7	United Kingdom	40	2.1%
8	Brazil	37	1.9%
9	Iran, Islamic Republic of	32	1.6%
10	Australia	30	1.5%
11	Netherlands	30	1.5%
12	Korea, Republic of	28	1.4%
13	Russia	23	1.2%
14	Italy	21	1.1%
15	Zambia	19	1%
16	Pakistan	17	0.9%
17	Turkey	15	0.8%
18	Israel	14	0.7%
19	Colombia	13	0.7%
20	Portugal	12	0.6%
21	El Salvador	10	0.5%
22	Singapore	9	0.5%
23	Switzerland	7	0.4%
24	South Africa	7	0.4%
25	France	7	0.4%
26	Ireland	7	0.4%
27	Mexico	6	0.3%
28	Romania	6	0.3%
29	Ukraine	5	0.3%
30	Peru	5	0.3%
31	Malta	5	0.3%
32	Ethiopia	5	0.3%
33	Argentina	4	0.2%
34	Philippines	4	0.2%
35	Norway	3	0.2%
36	Spain	3	0.2%
37	Belgium	3	0.2%
38	Egypt	3	0.2%
39	Denmark	2	0.1%
40	Bangladesh	2	0.1%
41	Mauritius	2	0.1%
42	Holy See	2	0.1%
43	Hong Kong	2	0.1%
44	Poland	2	0.1%
45	United Arab Emirates	2	0.1%
46	Taiwan	2	0.1%
47	Thailand	2	0.1%
48	Slovakia	1	0.1%
49	Oman	1	0.1%
50	Nigeria	1	0.1%
51	Sri Lanka	1	0.1%
52	Sweden	1	0.1%
53	Qatar	1	0.1%
54	Rwanda	1	0.1%
55	Serbia	1	0.1%
56	Guatemala	1	0.1%
57	Mongolia	1	0.1%
58	Morocco	1	0.1%
59	Lithuania	1	0.1%
60	Malaysia	1	0.1%
61	Jordan	1	0.1%
62	Cyprus	1	0.1%
63	Czech Republic	1	0.1%
64	Bulgaria	1	0.1%