Rank	Countries/Territories	Count	Percent
1	United States	496	38.4%
2	China	467	36.2%
3	Germany	82	6.4%
4	Canada	39	3%
5	France	30	2.3%
6	Japan	25	1.9%
7	Netherlands	20	1.5%
8	Greece	16	1.2%
9	India	12	0.9%
10	Denmark	12	0.9%
11	Cyprus	11	0.9%
12	United Kingdom	9	0.7%
13	Singapore	8	0.6%
14	Turkey	7	0.5%
15	Australia	7	0.5%
16	Korea, Republic of	7	0.5%
17	Hungary	5	0.4%
18	Colombia	5	0.4%
19	Ireland	4	0.3%
20	Switzerland	4	0.3%
21	Malaysia	4	0.3%
22	Spain	3	0.2%
23	Georgia	3	0.2%
24	Austria	2	0.2%
25	Brazil	2	0.2%
26	Israel	2	0.2%
27	Latvia	2	0.2%
28	Qatar	2	0.2%
29	Romania	1	0.1%
30	Mongolia	1	0.1%
31	Ukraine	1	0.1%
32	Viet Nam	1	0.1%
33	Lithuania	1	0.1%