(1) The amount calculated under section 6 only applies as the amount of a monetary unit for a financial year if it is equal to or greater than the amount calculated for the previous financial year.
(2) If the amount calculated under section 6 is less than the amount calculated for the previous financial year, the amount of the monetary unit for the financial year is the amount applicable in the previous financial year.
(3) The amount of a monetary unit takes effect on 1 July of each year and applies only in respect of matters occurring during that financial year.