(1) Subject to this Part, if:
(a) the all groups consumer price index number for the weighted average of the 6 State capital cities published by the Statistician in respect of the March quarter of the year 1973 exceeds the all groups consumer price index number for the weighted average of the 6 State capital cities published by the Statistician in respect of the June quarter of the year 1971; and
(b) the estimate of the seasonally adjusted average weekly earnings per employed male unit throughout the Commonwealth published by the Statistician in respect of the March quarter of the year 1973 exceeds the estimate of the seasonally adjusted average weekly earnings per employed male unit throughout the Commonwealth published by the Statistician in respect of the June quarter of the year 1971;
a person who was in receipt of a pension (other than a pension payable to or in respect of an eligible child) immediately before 1 July 1973 is entitled to an increase, as ascertained in accordance with this section, in the amount of the annual pension that was payable to him immediately before that date .
(2) The increase provided for by subsection ( 1) in the amount of the annual pension payable to a person immediately before 1 July 1973, is the prescribed percentage of the non - contributory portion of the amount of the annual pension .
(3) For the purposes of this section, the prescribed percentage is whichever is the lower of:
(a) 1.4 times the percentage that represents A - B expressed as a percentage of B; or
(b) the percentage that represents C - D expressed as a percentage of D;
where:
A is the all groups consumer price index number for the weighted average of the 6 State capital cities published by the Statistician in respect of the March quarter of the year 1973;
B is the all groups consumer price index number for the weighted average of the 6 State capital cities published by the Statistician in respect of the June quarter of the year 1971;
C is the estimate of the seasonally adjusted average weekly earnings per employed male unit throughout the Commonwealth published by the Statistician in respect of the March quarter of the year 1973; and
D is the estimate of the seasonally adjusted average weekly earnings per employed male unit throughout the Commonwealth published by the Statistician in respect of the June quarter of the year 1971 .