The supplement to the retirement allowance payable under section 7(5) of former Act No. 251 of the Public Acts of 1935, described as follows, is retained:

Effective Date of Retirement	Percent of Increase
July 1, 1972 to June 30, 1973	2
July 1, 1971 to June 30, 1972	4
July 1, 1970 to June 30, 1971	6
July 1, 1969 to June 30, 1970	8
July 1, 1968 to June 30, 1969	10
July 1, 1967 to June 30, 1968	12
July 1, 1966 to June 30, 1967	14
July 1, 1965 to June 30, 1966	16
July 1, 1964 to June 30, 1965	18
July 1, 1963 to June 30, 1964	20
July 1, 1962 to June 30, 1963	22
July 1, 1961 to June 30, 1962	24
July 1, 1960 to June 30, 1961	26
July 1, 1959 to June 30, 1960	28
Any time before July 1, 1959	30