Rank	Countries/Territories	Count	Percent
1	United States	318	53.1%
2	China	119	19.9%
3	Germany	59	9.8%
4	Japan	21	3.5%
5	France	19	3.2%
6	Netherlands	11	1.8%
7	Singapore	8	1.3%
8	Canada	6	1%
9	Australia	4	0.7%
10	Romania	3	0.5%
11	India	3	0.5%
12	Iran, Islamic Republic of	3	0.5%
13	Lithuania	3	0.5%
14	Malaysia	3	0.5%
15	Ukraine	3	0.5%
16	United Kingdom	2	0.3%
17	South Africa	2	0.3%
18	Mongolia	2	0.3%
19	Belgium	2	0.3%
20	Argentina	2	0.3%
21	Grenada	2	0.3%
22	Cyprus	2	0.3%
23	Hong Kong	1	0.2%
24	Turkey	1	0.2%