Rank	Countries/Territories	Count	Percent
1	United States	329	42.5%
2	China	216	27.9%
3	Germany	62	8%
4	Japan	39	5%
5	Canada	20	2.6%
6	France	18	2.3%
7	United Kingdom	15	1.9%
8	Singapore	12	1.6%
9	Taiwan	9	1.2%
10	Ireland	9	1.2%
11	Netherlands	9	1.2%
12	Greece	7	0.9%
13	India	6	0.8%
14	Romania	4	0.5%
15	Argentina	3	0.4%
16	Belgium	2	0.3%
17	Hong Kong	2	0.3%
18	Russia	2	0.3%
19	Poland	2	0.3%
20	Iran, Islamic Republic of	2	0.3%
21	South Africa	2	0.3%
22	Sweden	1	0.1%
23	Ukraine	1	0.1%
24	Malaysia	1	0.1%
25	Cyprus	1	0.1%