(1) In this Part, unless the contrary intention appears:
" Defence Force Retirement and Death Benefits Act" means the Defence Force Retirement and Death Benefits Act 1973 or that Act as amended and in force from time to time.
"pension benefit" means a pension benefit payable under the Defence Force Retirement and Death Benefits Act .
(2) For the purposes of this Part, the prescribed percentage is the percentage which represents A - B expressed as a percentage of B, 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 1975; and
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 March quarter of the year 1974 .
(3) If, at any time, whether before or after the commencement of this Part, the Statistician has published in respect of the March quarter of the year 1975 or the March quarter of the year 1974, an all groups consumer price index number for the weighted average of the 6 State capital cities in substitution for an index number previously published by him in respect of that quarter, the publication of the latter index number shall be disregarded for the purpose of this Part .
(4) If the prescribed percentage for the purposes of this section is or includes a fraction of one - tenth of 1 per centum:
(a) if that fraction is less than one - half of one - tenth--that fraction shall be disregarded; and
(b) if that fraction is not less than one - half of one - tenth--that fraction shall be treated as one - tenth .