,Instrument,"U.S. government securities/Treasury constant maturities/Inflation indexed" ,Maturity,"5-year" ,Frequency,"Annual" ,Description,"Market yield on U.S. Treasury securities at 5-year constant maturity, quoted on investment basis, inflation-indexed" ,Note,"Yields on Treasury inflation protected securities (TIPS) adjusted to constant maturities. Source: U.S. Treasury. Additional information on both nominal and inflation-indexed yields may be found at www.treas.gov/offices/domestic-finance/debt-management/interest-rate/index.html." DATE , TCMIIY5 2003, 1.27 2004, 1.04 2005, 1.50 2006, 2.28 2007, 2.15 2008, 1.30