The weekly average yield to maturity of the Bond Buyer Municipal Bond Index, which is based on 40 long-term bond prices, increased one basis point this week to 4.15% for the week ending March 21, 2013.
The 20-Bond GO Index of 20-year general obligation yields declined one basis point this week, to 3.99%. But it remained above its 3.86% level from two weeks ago.
The 11-Bond GO Index of higher-grade 20-year GO yields also dropped one basis point this week, to 3.76%, but remained above its 3.63% level from two weeks ago.
The Bond Buyer's Revenue Bond Index, which measures 30-year revenue bond yields, fell four basis points this week, to 4.37%. But it remained above its 4.31% level from two weeks ago.
The yield on the U.S. Treasury's 10-year note declined 11 basis points this week, to 1.93%, which is its lowest level since Feb. 28, 2013 (three weeks ago), when it was 1.89%.
The yield on the Treasury's 30-year bond fell nine basis points this week, to 3.15%, which is the lowest yield for the 30-year since Feb. 28, 2013 (three weeks ago), when it was 3.10%.