The annual debt statement shall be in form prescribed by the director and shall set forth as to the local unit:
a. Gross debt;
b. Deductions;
c. Net debt;
d. The equalized valuations of the taxable real estate, together with improvements, for the last 3 preceding fiscal years, and the average thereof;
e. Net debt expressed as a percentage of such average of equalized valuations; and
f. Any other information or detail required by law or by the director. The amount of any item which is indefinite or unascertainable may be estimated.