Rank	Countries/Territories	Count	Percent
1	United States	523	38.6%
2	China	376	27.7%
3	Germany	152	11.2%
4	Canada	71	5.2%
5	Netherlands	37	2.7%
6	Japan	35	2.6%
7	Korea, Republic of	28	2.1%
8	France	21	1.5%
9	Norway	14	1%
10	Singapore	10	0.7%
11	Ukraine	9	0.7%
12	Iran, Islamic Republic of	8	0.6%
13	Cyprus	7	0.5%
14	India	7	0.5%
15	Taiwan	7	0.5%
16	Spain	6	0.4%
17	Ireland	6	0.4%
18	Hong Kong	5	0.4%
19	Poland	5	0.4%
20	Italy	4	0.3%
21	Australia	3	0.2%
22	Thailand	3	0.2%
23	United Kingdom	3	0.2%
24	Romania	2	0.1%
25	Bangladesh	2	0.1%
26	Latvia	2	0.1%
27	Malaysia	2	0.1%
28	Hungary	1	0.1%
29		1	0.1%
30	Georgia	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%