Rank	Countries/Territories	Count	Percent
1	United States	513	39.3%
2	China	366	28.1%
3	Russia	56	4.3%
4	Iran, Islamic Republic of	51	3.9%
5	United Kingdom	41	3.1%
6	Germany	34	2.6%
7	India	29	2.2%
8	Spain	25	1.9%
9	Canada	21	1.6%
10	Australia	18	1.4%
11	Brazil	13	1%
12	Korea, Republic of	12	0.9%
13	Japan	11	0.8%
14	Norway	9	0.7%
15	Hong Kong	9	0.7%
16	Argentina	9	0.7%
17	Austria	8	0.6%
18	Romania	6	0.5%
19	Singapore	6	0.5%
20	France	5	0.4%
21	Finland	4	0.3%
22	Bangladesh	4	0.3%
23	Malaysia	4	0.3%
24	Ireland	4	0.3%
25	Taiwan	4	0.3%
26	Viet Nam	4	0.3%
27	Turkey	4	0.3%
28	Mexico	3	0.2%
29	Netherlands	3	0.2%
30	Saudi Arabia	3	0.2%
31	Denmark	3	0.2%
32	Croatia	3	0.2%
33	Egypt	2	0.2%
34	Belgium	2	0.2%
35	Burkina Faso	2	0.2%
36	Hungary	2	0.2%
37	Indonesia	2	0.2%
38	Sweden	2	0.2%
39	Tunisia	1	0.1%
40	Ukraine	1	0.1%
41	Kuwait	1	0.1%
42	Bulgaria	1	0.1%
43	Bahrain	1	0.1%
44	Czech Republic	1	0.1%
45	Chile	1	0.1%