Original: As of 2009 , the size of the worldwide bond market ( total debt outstanding ) is an estimated $ 82.2 trillion , of which the size of the outstanding U.S. bond market debt was $ 31.2 trillion according to BIS ( or alternatively $ 34.3 trillion according to SIFMA ) .
Simplified: In 2006 the size of the international bond market was about $ 45 trillion . The size of the outstanding U.S. bond market debt was $ 25.2 trillion .