Savings once deemed adequate for retirement living have been rendered inadequate by increased tax rates, increased property values, and the failure of pension systems to adequately reflect such factors. It is therefore deemed necessary that the legislature, in addition to that tax exemption as provided for in RCW 84.36.381 through 84.36.389 as now or hereafter amended, allow retired persons to defer payment of special assessments on their residences, and to defer their real property tax obligations on their residences, an amount of up to eighty percent of their equity in said property. This deferral program is intended to assist retired persons in maintaining their dignity and a reasonable standard of living by residing in their own homes, providing for their own needs, and managing their own affairs without requiring assistance from public welfare programs.