Rank	Countries/Territories	Count	Percent
1	United States	269	45.7%
2	China	169	28.7%
3	Germany	69	11.7%
4		21	3.6%
5	Iran, Islamic Republic of	9	1.5%
6	Switzerland	9	1.5%
7	Korea, Republic of	6	1%
8	Cyprus	6	1%
9	France	3	0.5%
10	Australia	3	0.5%
11	Hong Kong	3	0.5%
12	India	3	0.5%
13	Japan	3	0.5%
14	Netherlands	3	0.5%
15	United Kingdom	3	0.5%
16	Singapore	2	0.3%
17	Malaysia	2	0.3%
18	Canada	2	0.3%
19	Greece	1	0.2%
20	Spain	1	0.2%
21	Philippines	1	0.2%