Rank	Countries/Territories	Count	Percent
1	United States	310	52.9%
2	China	117	20%
3	Germany	59	10.1%
4	Japan	21	3.6%
5	France	19	3.2%
6	Netherlands	11	1.9%
7	Singapore	8	1.4%
8	Canada	6	1%
9	Australia	4	0.7%
10	Lithuania	3	0.5%
11	Malaysia	3	0.5%
12	India	3	0.5%
13	Iran, Islamic Republic of	3	0.5%
14	Ukraine	3	0.5%
15	United Kingdom	2	0.3%
16	Mongolia	2	0.3%
17	South Africa	2	0.3%
18	Belgium	2	0.3%
19	Argentina	2	0.3%
20	Grenada	2	0.3%
21	Cyprus	2	0.3%
22	Hong Kong	1	0.2%
23	Turkey	1	0.2%