On or after October 1, 1986, the monthly retirement allowance payable to a retirant or retirement allowance beneficiary who was on the rolls as such for September, 1984 is supplemented as follows:

Effective Date of Retirement	Percent of Increase
October 1, 1983 to September 30, 1984	2
October 1, 1982 to September 30, 1983	4
October 1, 1981 to September 30, 1982	6
October 1, 1980 to September 30, 1981	8
October 1, 1979 to September 30, 1980	10
October 1, 1978 to September 30, 1979	12
October 1, 1977 to September 30, 1978	14
October 1, 1976 to September 30, 1977	16
October 1, 1975 to September 30, 1976	18
October 1, 1974 to September 30, 1975	20
October 1, 1973 to September 30, 1974	22
October 1, 1972 to September 30, 1973	24
October 1, 1971 to September 30, 1972	26
October 1, 1970 to September 30, 1971	28
Before October 1, 1970	30