The debt peaked at $562.9 billion at the end of 1996-97.
Between 1997 and 2008, $105 billion of the federal debt was repaid, dropping to $457.6 billion in 2007-08.
Between 2008 and 2015, more than $150 billion was added back onto the federal debt, leaving it at $614 billion, a new high. 就是说有从08年开始, 增发国债一千五百亿, 平均一年2百亿.。。