Rank	Countries/Territories	Count	Percent
1	United States	507	42.9%
2	China	439	37.1%
3	Germany	94	8%
4	Japan	24	2%
5	Canada	23	1.9%
6	India	16	1.4%
7	Singapore	13	1.1%
8	France	9	0.8%
9	Netherlands	9	0.8%
10	Ireland	7	0.6%
11	Korea, Republic of	7	0.6%
12	Cyprus	6	0.5%
13	Slovenia	6	0.5%
14	Ukraine	5	0.4%
15	Sweden	3	0.3%
16	Australia	3	0.3%
17	Russia	3	0.3%
18	Romania	2	0.2%
19	Argentina	2	0.2%
20	Iran, Islamic Republic of	2	0.2%
21	Bulgaria	1	0.1%
22	Philippines	1	0.1%