"In 1958-59 public debt charges were again the second largest item of budgetary expenditures. These charges, which consist of interest on public debt, the annual amortization of bond discounts and commissions, the cost of issuing new loans and other costs incurred in servicing the public debt, amounted to $644,000,000.00"
"Interest on public debt was $604,000,000.00"
"During the fiscal year ended March 31, 1959, the gross public debt increased to $20,220,000,000.00"
(From HANSARD of April 19, 1959)