Rank	Countries/Territories	Count	Percent
1	United States	539	38.2%
2	China	408	28.9%
3	Germany	152	10.8%
4	Canada	71	5%
5	Netherlands	37	2.6%
6	Japan	35	2.5%
7	Korea, Republic of	28	2%
8	France	23	1.6%
9	Norway	14	1%
10	Singapore	10	0.7%
11	Ukraine	9	0.6%
12	Iran, Islamic Republic of	8	0.6%
13	Cyprus	7	0.5%
14	Australia	7	0.5%
15	India	7	0.5%
16	Taiwan	7	0.5%
17	Spain	6	0.4%
18	Ireland	6	0.4%
19	Italy	5	0.4%
20	Hong Kong	5	0.4%
21	Poland	5	0.4%
22	Thailand	3	0.2%
23	United Kingdom	3	0.2%
24	Romania	2	0.1%
25	Latvia	2	0.1%
26	Malaysia	2	0.1%
27	Bangladesh	2	0.1%
28		1	0.1%
29	Georgia	1	0.1%
30	Hungary	1	0.1%
31	Russia	1	0.1%
32	Serbia	1	0.1%
33	Pakistan	1	0.1%
34	Paraguay	1	0.1%
35	Switzerland	1	0.1%