Rank	Countries/Territories	Count	Percent
1	United States	419	49.8%
2	China	210	24.9%
3	Germany	80	9.5%
4	Canada	21	2.5%
5	France	19	2.3%
6		18	2.1%
7	Switzerland	14	1.7%
8	Netherlands	10	1.2%
9	Singapore	8	1%
10	United Kingdom	8	1%
11	Japan	8	1%
12	Australia	5	0.6%
13	Cyprus	4	0.5%
14	Latvia	3	0.4%
15	India	3	0.4%
16	Israel	2	0.2%
17	Greece	2	0.2%
18	Korea, Republic of	2	0.2%
19	Mongolia	2	0.2%
20	Ukraine	1	0.1%
21	Malaysia	1	0.1%
22	Bangladesh	1	0.1%
23	Bulgaria	1	0.1%