If held to maturity, the securities yield from 7.05 percent to 7.25 percent.

If held to maturity these securities yield from 6.60 percent to 6.65 percent.

They were essentially Government-issued junk bonds, yielding anywhere from 15 to 50 percent.

The debt was priced to yield from 3.70 percent in 1996 to 5.70 percent in 2014 and 2015.

Serial bonds yield from 3.4 percent in 1993 to 6 percent in 2002.

The bonds are priced for public sale to yield from 5 percent to 7.20 percentin 1988.

The bonds were priced to yield from 3.9 percent in 1997 to 5.5 percent in 2010.

Term bonds were tentatively priced to yield from 7 3/4 percent for those maturing in 2008.

The rest of the tax-exempt bonds were priced to yield from 4.30 percent in 1996 to 6.15 in 2013.

In the top tax bracket this is equivalent to yield from 6.23 percent to 8.91 percent.