Rank	Countries/Territories	Count	Percent
1	United States	325	37%
2	China	255	29%
3	Germany	87	9.9%
4	Canada	25	2.8%
5	Iran, Islamic Republic of	25	2.8%
6	Russia	19	2.2%
7	Japan	18	2.1%
8	France	18	2.1%
9	United Kingdom	16	1.8%
10	Netherlands	12	1.4%
11	India	11	1.3%
12	Ireland	9	1%
13	Italy	8	0.9%
14	Thailand	7	0.8%
15	Singapore	7	0.8%
16	Australia	6	0.7%
17	Cyprus	4	0.5%
18	Mauritius	4	0.5%
19	Malaysia	3	0.3%
20	Belgium	3	0.3%
21	Indonesia	2	0.2%
22	Romania	2	0.2%
23	Spain	2	0.2%
24	Ukraine	2	0.2%
25	Switzerland	1	0.1%
26	Taiwan	1	0.1%
27	Mongolia	1	0.1%
28	Finland	1	0.1%
29	Korea, Republic of	1	0.1%
30	New Zealand	1	0.1%
31	Pakistan	1	0.1%
32	Poland	1	0.1%