Rank	Countries/Territories	Count	Percent
1	United States	276	59.2%
2	China	65	13.9%
3	Germany	39	8.4%
4	Japan	21	4.5%
5	Canada	8	1.7%
6		7	1.5%
7	Netherlands	7	1.5%
8	Singapore	6	1.3%
9	Mauritius	4	0.9%
10	Cyprus	4	0.9%
11	France	4	0.9%
12	Argentina	3	0.6%
13	Italy	3	0.6%
14	Hong Kong	3	0.6%
15	Switzerland	3	0.6%
16	Taiwan	2	0.4%
17	Spain	2	0.4%
18	Mexico	2	0.4%
19	New Zealand	2	0.4%
20	Iran, Islamic Republic of	2	0.4%
21	Australia	2	0.4%
22	Sweden	1	0.2%