Rates Over Time - Interest Rate Trends

The following tables set forth information relating to municipal bond interest rates trends based on "The Bond Buyer 20-Bond GO Index" for the past ten years and for the twelve month period ending May 15, 2008.  The 20-Bond GO Index is based on an average of certain general obligation municipal bonds maturing in 20 years and having an average rating equivalent of Moody's Aa2 and Standard & Poor's AA.