Rank	Countries/Territories	Count	Percent
1	United States	231	33.4%
2	Japan	132	19.1%
3	China	107	15.5%
4	Germany	105	15.2%
5	Singapore	17	2.5%
6	Netherlands	17	2.5%
7	Australia	14	2%
8	Korea, Republic of	11	1.6%
9	Canada	10	1.4%
10	France	10	1.4%
11	Russia	5	0.7%
12	Cyprus	4	0.6%
13	Belgium	3	0.4%
14	Brazil	3	0.4%
15	Philippines	3	0.4%
16	Romania	3	0.4%
17	Greece	2	0.3%
18	Iran, Islamic Republic of	2	0.3%
19	Ireland	2	0.3%
20	Israel	2	0.3%
21	Malaysia	2	0.3%
22	Sweden	2	0.3%
23	Switzerland	2	0.3%
24	Syrian Arab Republic	2	0.3%
25	Viet Nam	1	0.1%