,Instrument,"U.S. government securities/Treasury constant maturities/Nominal" ,Maturity,"1-month" ,Frequency,"Annual" ,Description,"Market yield on U.S. Treasury securities at 1-month constant maturity, quoted on investment basis" ,Note,"Yields on actively traded non-inflation-indexed issues adjusted to constant maturities. The 30-year Treasury constant maturity series was discontinued on February 18, 2002, and reintroduced on February 9, 2006. From February 18, 2002, to February 9, 2006, the U.S. Treasury published a factor for adjusting the daily nominal 20-year constant maturity in order to estimate a 30-year nominal rate. The historical adjustment factor can be found at www.treas.gov/offices/domestic-finance/debt-management/interest-rate/ltcompositeindex_historical.shtml. Source: U.S. Treasury." DATE , TCMNOMM1 2001, 2.47 2002, 1.63 2003, 1.02 2004, 1.27 2005, 3.00 2006, 4.75 2007, 4.41