Rank	Countries/Territories	Count	Percent
1	United States	311	42.2%
2	China	240	32.6%
3	Germany	82	11.1%
4	France	29	3.9%
5	Japan	16	2.2%
6	Ireland	8	1.1%
7	Canada	7	0.9%
8	Cyprus	6	0.8%
9	Iran, Islamic Republic of	5	0.7%
10	Czech Republic	4	0.5%
11	Hong Kong	4	0.5%
12	United Kingdom	4	0.5%
13	Singapore	4	0.5%
14	India	3	0.4%
15	Netherlands	3	0.4%
16	Norway	2	0.3%
17	Indonesia	2	0.3%
18	Australia	2	0.3%
19	Switzerland	2	0.3%
20	Argentina	1	0.1%
21	Malaysia	1	0.1%
22	Mongolia	1	0.1%