(28) Base revenue for the fiscal year ending June 30, 1995, means the sum of the grant entitlements for the fiscal year ending June 30, 1995, of a town pursuant to section 10-262h and subsection (a) of section 10-76g, including its proportional share, based on enrollment, of the revenue paid pursuant to section 10-76g, to the regional district of which the town is a member, and for each fiscal y