Rank	Countries/Territories	Count	Percent
1	United States	264	39.9%
2	China	172	26%
3	Germany	59	8.9%
4	France	43	6.5%
5	Korea, Republic of	34	5.1%
6	Japan	15	2.3%
7	India	14	2.1%
8		8	1.2%
9	Czech Republic	7	1.1%
10	Canada	6	0.9%
11	Australia	6	0.9%
12	Cyprus	6	0.9%
13	Singapore	6	0.9%
14	Norway	3	0.5%
15	United Kingdom	3	0.5%
16	Ireland	3	0.5%
17	Netherlands	2	0.3%
18	Iran, Islamic Republic of	2	0.3%
19	Hong Kong	2	0.3%
20	Austria	2	0.3%
21	Portugal	2	0.3%
22	Ukraine	1	0.2%
23	Finland	1	0.2%
24	Italy	1	0.2%