For the purpose of determining the annual expenditures required by Section 5952, only such expenditures for land, structures, and improvements as are raised by local taxation within the district shall be included and the district shall be both charged and credited with the expenditures for land, structures, and improvements made by the county in which the district is located, both for beach and harbor purposes and for inland park and recreational purposes. Within 90 days after the effective date of this section, the auditor-controller of the county in which the district is located shall report to the board of supervisors the moneys raised by local taxation for land, structures, and improvements by the district and by the county for beach and harbor purposes and inland park and recreational purposes. The future annual expenditures, at the ratio set forth in Section 5952, shall be for those expenditures paid from funds raised by the levy of taxes by the district.