An appropriation for "cash deficit of preceding year" shall appear in each annual budget in the amount by which the liabilities and cash disbursements of the local unit for expenditures in the fiscal year next preceding exceed the cash receipts and other realized revenues in such next preceding fiscal year, except to the extent that such lawful yearly expenditures have been provided for by surplus anticipated in the budget of such years.
N.J.S. § 40A:4-42