Rank	Countries/Territories	Count	Percent
1	United States	523	48.1%
2	China	295	27.1%
3	Germany	102	9.4%
4	Canada	25	2.3%
5	France	25	2.3%
6		18	1.7%
7	Japan	16	1.5%
8	Switzerland	14	1.3%
9	Singapore	12	1.1%
10	Netherlands	12	1.1%
11	United Kingdom	10	0.9%
12	Australia	5	0.5%
13	Cyprus	5	0.5%
14	Latvia	3	0.3%
15	India	3	0.3%
16	Israel	2	0.2%
17	Greece	2	0.2%
18	Korea, Republic of	2	0.2%
19	Finland	2	0.2%
20	Mongolia	2	0.2%
21	Romania	2	0.2%
22	South Africa	2	0.2%
23	Ukraine	1	0.1%
24	Norway	1	0.1%
25	Bangladesh	1	0.1%
26	Bulgaria	1	0.1%
27	Malaysia	1	0.1%
28	Hong Kong	1	0.1%