Rank	Countries/Territories	Count	Percent
1	United States	432	47.1%
2	China	154	16.8%
3	Germany	127	13.8%
4	Japan	24	2.6%
5	France	24	2.6%
6	India	22	2.4%
7	Canada	22	2.4%
8	Romania	20	2.2%
9	Netherlands	13	1.4%
10	Singapore	12	1.3%
11	Nigeria	8	0.9%
12	Korea, Republic of	8	0.9%
13	Cyprus	7	0.8%
14	Switzerland	7	0.8%
15	United Kingdom	7	0.8%
16	Argentina	4	0.4%
17	Australia	4	0.4%
18	Bangladesh	3	0.3%
19	Russia	3	0.3%
20	Thailand	2	0.2%
21	Ukraine	2	0.2%
22	Brazil	2	0.2%
23	Malaysia	2	0.2%
24	Mongolia	1	0.1%
25	Poland	1	0.1%
26	Bahrain	1	0.1%
27	Egypt	1	0.1%
28	Cayman Islands	1	0.1%
29	Turkmenistan	1	0.1%
30	Slovakia	1	0.1%
31	Spain	1	0.1%