Rank	Countries/Territories	Count	Percent
1	United States	162	34.7%
2	China	150	32.1%
3	Germany	61	13.1%
4	Japan	15	3.2%
5	Canada	13	2.8%
6	Taiwan	10	2.1%
7	France	7	1.5%
8	Netherlands	7	1.5%
9	Hong Kong	6	1.3%
10	Singapore	6	1.3%
11	Ireland	5	1.1%
12	Korea, Republic of	5	1.1%
13	Slovenia	4	0.9%
14	Switzerland	2	0.4%
15	Turkey	2	0.4%
16	Luxembourg	2	0.4%
17	Qatar	2	0.4%
18	Cyprus	2	0.4%
19	Australia	1	0.2%
20	Iran, Islamic Republic of	1	0.2%
21	Poland	1	0.2%
22	Lithuania	1	0.2%
23	Kenya	1	0.2%
24	Ukraine	1	0.2%