Rank	Countries/Territories	Count	Percent
1	United States	342	47.8%
2	China	231	32.3%
3	Germany	42	5.9%
4	Japan	14	2%
5	Ghana	11	1.5%
6	Singapore	11	1.5%
7	Ukraine	9	1.3%
8	France	9	1.3%
9	Ireland	7	1%
10	Australia	6	0.8%
11	Netherlands	4	0.6%
12	Norway	4	0.6%
13	Canada	3	0.4%
14	Cyprus	3	0.4%
15	Bangladesh	2	0.3%
16	India	2	0.3%
17	Iran, Islamic Republic of	2	0.3%
18	Malaysia	2	0.3%
19	Mexico	2	0.3%
20	Philippines	2	0.3%
21	Thailand	2	0.3%
22	Sweden	1	0.1%
23	Switzerland	1	0.1%
24	Mongolia	1	0.1%
25	Argentina	1	0.1%
26	Hong Kong	1	0.1%