Rank	Countries/Territories	Count	Percent
1	United States	400	37.6%
2	China	376	35.3%
3	Germany	86	8.1%
4	France	55	5.2%
5	Australia	19	1.8%
6	Iran, Islamic Republic of	18	1.7%
7	Canada	13	1.2%
8	Cyprus	9	0.8%
9	Mauritius	9	0.8%
10	Norway	8	0.8%
11	Singapore	8	0.8%
12	Japan	7	0.7%
13	India	5	0.5%
14	Netherlands	4	0.4%
15	Nigeria	4	0.4%
16	Puerto Rico	4	0.4%
17	Romania	4	0.4%
18	Syrian Arab Republic	4	0.4%
19	United Kingdom	3	0.3%
20	Switzerland	3	0.3%
21	Ireland	3	0.3%
22	Argentina	3	0.3%
23	Algeria	2	0.2%
24	Ethiopia	2	0.2%
25	French Polynesia	2	0.2%
26	United Arab Emirates	2	0.2%
27	Tanzania, United Republic of	2	0.2%
28	Uganda	2	0.2%
29	Ukraine	1	0.1%
30	Taiwan	1	0.1%
31	Spain	1	0.1%
32	Pakistan	1	0.1%
33	Philippines	1	0.1%
34	Poland	1	0.1%
35	Indonesia	1	0.1%
36	Malaysia	1	0.1%