Level from MTS, Table 6 Means of Financing the Deficit or Disposition of Surplus by the U.S. Government. Calculated as Schedule B-Securities Issued by Federal Agencies Under Special Financing Authorities, column Account Balances, Close of This Month, Total agency securities; less, Schedule D-Investments of Federal Government Accounts in Federal Securities, column Securities Held as Investments, Close of This Month, Trust funds, Total agency securities. Unadjusted flow is the change in the level; data for the most recent ten years show no significant seasonality.