Resource Center | U.S. Department of the Treasury Treasury Coupon Issues. Corporate Bond Yield Curve. Receipts & Outlays. Monthly Treasury Statement. Daily Treasury Statement. How Your Money Is Spent. ... Select type of Interest Rate Data Select Time Period. Date 20 YR 30 YR Extrapolation Factor 4 WEEKS BANK DISCOUNT COUPON EQUIVALENT 8 WEEKS BANK DISCOUNT COUPON EQUIVALENT 13 WEEKS …