Rank	Countries/Territories	Count	Percent
1	United States	139	36.6%
2	China	92	24.2%
3	Germany	39	10.3%
4	Canada	16	4.2%
5	Japan	14	3.7%
6	Switzerland	12	3.2%
7	Singapore	8	2.1%
8	United Kingdom	7	1.8%
9	Korea, Republic of	6	1.6%
10	Cyprus	6	1.6%
11	India	5	1.3%
12	Malaysia	5	1.3%
13	Ireland	4	1.1%
14	Hong Kong	4	1.1%
15	France	3	0.8%
16	Netherlands	3	0.8%
17	Thailand	3	0.8%
18	Sweden	3	0.8%
19	Romania	2	0.5%
20	Russia	2	0.5%
21	Indonesia	2	0.5%
22	Iran, Islamic Republic of	2	0.5%
23	Georgia	1	0.3%
24	Norway	1	0.3%
25	Taiwan	1	0.3%