Rank	Countries/Territories	Count	Percent
1	United States	455	44.3%
2	China	298	29%
3	Germany	77	7.5%
4	Japan	44	4.3%
5	France	25	2.4%
6	Canada	23	2.2%
7	United Kingdom	19	1.9%
8	Singapore	13	1.3%
9	Taiwan	9	0.9%
10	Ireland	9	0.9%
11	Netherlands	9	0.9%
12	Greece	7	0.7%
13	India	6	0.6%
14	Argentina	5	0.5%
15	Romania	4	0.4%
16	Cyprus	3	0.3%
17	Hong Kong	2	0.2%
18	Australia	2	0.2%
19	Belgium	2	0.2%
20	Iran, Islamic Republic of	2	0.2%
21	Poland	2	0.2%
22	Russia	2	0.2%
23	South Africa	2	0.2%
24	Spain	1	0.1%
25	Sweden	1	0.1%
26	Ukraine	1	0.1%
27	Malaysia	1	0.1%
28	Mongolia	1	0.1%
29	Bangladesh	1	0.1%