Rank	Countries/Territories	Count	Percent
1	United States	383	48.2%
2	China	226	28.5%
3	Germany	83	10.5%
4	Korea, Republic of	25	3.1%
5	Canada	16	2%
6	Japan	11	1.4%
7	Netherlands	8	1%
8	Singapore	7	0.9%
9	France	6	0.8%
10	Ireland	3	0.4%
11	Pakistan	3	0.4%
12	Cyprus	3	0.4%
13	Hungary	3	0.4%
14	Ukraine	3	0.4%
15	Taiwan	2	0.3%
16	India	2	0.3%
17	Iran, Islamic Republic of	2	0.3%
18	Hong Kong	2	0.3%
19	Malaysia	2	0.3%
20	Russia	1	0.1%
21	Switzerland	1	0.1%
22	Argentina	1	0.1%
23	United Kingdom	1	0.1%