Rank	Countries/Territories	Count	Percent
1	United States	154	38.9%
2	China	88	22.2%
3	Germany	53	13.4%
4	Japan	43	10.9%
5	Singapore	8	2%
6	Russia	7	1.8%
7	Spain	6	1.5%
8	India	5	1.3%
9	Cyprus	5	1.3%
10	Canada	4	1%
11	Hong Kong	4	1%
12	Saudi Arabia	3	0.8%
13	Ireland	3	0.8%
14	United Kingdom	2	0.5%
15	Netherlands	2	0.5%
16	New Zealand	2	0.5%
17	Iran, Islamic Republic of	2	0.5%
18	France	2	0.5%
19	Argentina	1	0.3%
20	Poland	1	0.3%
21	Switzerland	1	0.3%