Interest Rate ( %) 16 12 FieRcer Averages 10 Lon Term Bond A a:R ThreeMonth Bil (short-Term) 19501955196019651970197519019351990195g200 FIaURE 4 Movements over Time of interest Rates on U.S. Government Bonds with Different Maturities Sources: Board of governors of the Federal Reserve System, Banking and Moneta Stalsrics 级上91927 a Federal Reserve: Wwy, bog fb, fed.ustreleases/H54是