tokens: 8 13/16 % to 8 11/16 % one month ; 8 13/16 % to 8 11/16 % two months ; 8 13/16 % to 8 11/16 % three months ; 8 3/4 % to 8 5/8 % four months ; 8 11/16 % to 8 9/16 % five months ; 8 5/8 % to 8 1/2 % six months .