Rank	Countries/Territories	Count	Percent
1	United States	370	45.6%
2	China	255	31.4%
3	Germany	62	7.6%
4	France	42	5.2%
5	Canada	29	3.6%
6	Netherlands	13	1.6%
7	India	6	0.7%
8	Ireland	6	0.7%
9	Singapore	4	0.5%
10	Hong Kong	3	0.4%
11	Argentina	3	0.4%
12	Australia	3	0.4%
13	Belgium	3	0.4%
14	Japan	3	0.4%
15	Iran, Islamic Republic of	2	0.2%
16	Spain	2	0.2%
17	Sweden	2	0.2%
18	Switzerland	1	0.1%
19	Norway	1	0.1%
20	Poland	1	0.1%
21	Russia	1	0.1%