5. The loss on collection of capital value rates for any district for any year shall be the aggregate of the following amounts—
(a)The total amount for the year of rates written off in respect of—
(i)hereditaments or any parts of any hereditaments in the capital value list in the district; or
(ii)hereditaments or any parts of any hereditaments used for private dwelling, private storage or private garages that were included in a valuation list prior to 1st April 2007 in the district,
including allowances made by way of discount under Articles 20 and 21 of the 1977 Order but not including allowances made by way of discount under Article 30 of the 1977 Order; and
(b)3 per cent. of the total amount of rebates afforded in the year under the Social Security Administration (Northern Ireland) Act 1992 in respect of hereditaments or any parts of any hereditaments in the capital value list or hereditaments or any parts of any hereditaments used for private dwelling, private storage or private garages that were included in a valuation list prior to 1st April 2007,
less any amount falling under sub-paragraph (a) or (b) for an earlier year found during the year to be recoverable.