Rank	Countries/Territories	Count	Percent
1	United States	394	51.4%
2	China	187	24.4%
3	Germany	77	10.1%
4	France	21	2.7%
5	Japan	15	2%
6	Spain	14	1.8%
7	Canada	10	1.3%
8	United Kingdom	8	1%
9	Iran, Islamic Republic of	7	0.9%
10	Hong Kong	6	0.8%
11	Singapore	4	0.5%
12	Mongolia	3	0.4%
13	Netherlands	3	0.4%
14	Malaysia	2	0.3%
15	Hungary	2	0.3%
16	India	2	0.3%
17	Australia	2	0.3%
18	Cyprus	2	0.3%
19	Ukraine	2	0.3%
20	Switzerland	1	0.1%
21	Greece	1	0.1%
22	Brazil	1	0.1%
23	Argentina	1	0.1%
24	Russia	1	0.1%