Rank	Countries/Territories	Count	Percent
1	United States	419	44.3%
2	China	200	21.2%
3	Russia	55	5.8%
4	Iran, Islamic Republic of	50	5.3%
5	Germany	32	3.4%
6	India	22	2.3%
7	Spain	20	2.1%
8	United Kingdom	18	1.9%
9	Brazil	13	1.4%
10	Australia	10	1.1%
11	Japan	10	1.1%
12	Korea, Republic of	9	1%
13	Canada	9	1%
14	Austria	8	0.8%
15	Hong Kong	7	0.7%
16	Norway	7	0.7%
17	Romania	6	0.6%
18	France	5	0.5%
19	Singapore	4	0.4%
20	Malaysia	4	0.4%
21	Finland	4	0.4%
22	Denmark	3	0.3%
23	Bangladesh	3	0.3%
24	Croatia	3	0.3%
25	Mexico	3	0.3%
26	Ireland	2	0.2%
27	Sweden	2	0.2%
28	Argentina	2	0.2%
29	Egypt	2	0.2%
30	Hungary	2	0.2%
31	Indonesia	2	0.2%
32	Turkey	2	0.2%
33	Bahrain	1	0.1%
34	Czech Republic	1	0.1%
35	Bulgaria	1	0.1%
36	Taiwan	1	0.1%
37	Tunisia	1	0.1%
38	Saudi Arabia	1	0.1%
39	Netherlands	1	0.1%