Rank	Countries/Territories	Count	Percent
1	United States	246	35.8%
2	Japan	130	18.9%
3	China	108	15.7%
4	Germany	64	9.3%
5	Canada	28	4.1%
6	Ireland	12	1.7%
7	Netherlands	10	1.5%
8	Russia	9	1.3%
9	Singapore	8	1.2%
10	France	7	1%
11	Iran, Islamic Republic of	7	1%
12	India	5	0.7%
13	Italy	5	0.7%
14	United Kingdom	4	0.6%
15	Poland	4	0.6%
16	Israel	4	0.6%
17	Brazil	4	0.6%
18	Cyprus	4	0.6%
19	Korea, Republic of	3	0.4%
20	Hungary	3	0.4%
21	Hong Kong	2	0.3%
22	Australia	2	0.3%
23	Austria	2	0.3%
24	Mongolia	2	0.3%
25	South Africa	2	0.3%
26	Spain	2	0.3%
27	Viet Nam	2	0.3%
28	Ukraine	2	0.3%
29	Taiwan	2	0.3%
30	Turkey	1	0.1%
31	Switzerland	1	0.1%
32	Morocco	1	0.1%
33	Portugal	1	0.1%
34	Malaysia	1	0.1%