Prior to May 15th of each year, after the first fiscal year, during which the assessment district is to continue, the agency shall file with the legislative body a report which shall contain (1) an estimate of the total amount of funds including taxes received by the agency pursuant to subdivision (b) of Section 33670 which will be available to pay the indebtedness for the next fiscal year, (2) an estimate of the amount of payments specified in the report pursuant to Section 33822 which the agency will be unable to pay because of insufficient funds, and (3) a diagram and a proposed assessment to be levied upon each parcel of property in the area for the next fiscal year.