Since the depths of the financial crisis in late 2008, Treasury has lengthened the average maturity of outstanding marketable Treasury securities by nearly 32 percent.
In fact, the average maturity of outstanding marketable Treasury securities (63.9 months in May 2012) is now at its highest level in a decade. It is also above the 30-year historical average of 58.1 months between 1980 and 2010.
The average maturity of outstanding marketable Treasury securities reached 70.9 months in May 2001. Over the course of the next seven years, it ultimately declined to a 28-year low of 48.5 months in October 2008.
Moving forward, we intend to continue gradually lengthening the average maturity of outstanding Treasury securities. We will do so consistent with our long-term objectives of financing the government at the lowest cost over time, and ensuring regular and predictable management of our overall portfolio.
Colin Kim is the Director of the Office of Debt Management at the U.S. Department of the Treasury