Rank	Countries/Territories	Count	Percent
1	United States	400	45.9%
2	China	267	30.6%
3	Germany	92	10.6%
4	Canada	23	2.6%
5	France	21	2.4%
6	Japan	14	1.6%
7	Singapore	10	1.1%
8	Netherlands	8	0.9%
9	Russia	6	0.7%
10	India	5	0.6%
11	Belgium	3	0.3%
12	United Kingdom	3	0.3%
13	Ukraine	2	0.2%
14	Spain	2	0.2%
15	Australia	2	0.2%
16	Hong Kong	2	0.2%
17	Iran, Islamic Republic of	2	0.2%
18	Mauritius	2	0.2%
19	Mongolia	2	0.2%
20	Ireland	1	0.1%
21	Lithuania	1	0.1%
22	Cyprus	1	0.1%
23	Bangladesh	1	0.1%
24	Sweden	1	0.1%
25	Taiwan	1	0.1%