Rank	Countries/Territories	Count	Percent
1	United States	270	44.2%
2	China	122	20%
3	Germany	74	12.1%
4	Japan	32	5.2%
5	France	23	3.8%
6	Norway	12	2%
7	Singapore	11	1.8%
8	Italy	11	1.8%
9	United Kingdom	9	1.5%
10	Iran, Islamic Republic of	7	1.1%
11	Brazil	7	1.1%
12	Australia	3	0.5%
13	Cyprus	3	0.5%
14	Czech Republic	3	0.5%
15	Indonesia	3	0.5%
16	Korea, Republic of	3	0.5%
17	Malaysia	3	0.5%
18	Russia	3	0.5%
19	Spain	2	0.3%
20	Switzerland	2	0.3%
21	Netherlands	2	0.3%
22	India	2	0.3%
23	Canada	2	0.3%
24	Argentina	1	0.2%
25	Rwanda	1	0.2%