Quarter Billions of US Dollars 1996-10-01 0.11000 1997-01-01 0.11000 1997-04-01 0.11000 1997-07-01 0.11000 1999-10-01 0.07535 2001-07-01 0.20000 2001-10-01 0.20000 2002-01-01 0.20000 2002-04-01 0.44937 2002-07-01 0.24650 2002-10-01 0.26217 2003-01-01 0.54475 2003-04-01 0.28568 2003-07-01 0.29130 2003-10-01 0.31575 2004-01-01 1.13072 2004-04-01 0.39504 2004-07-01 0.40329 2004-10-01 0.48214 2005-01-01 0.03753 2005-04-01 0.03487 2005-07-01 0.03494 2005-10-01 0.08730 2007-01-01 0.26636 2007-04-01 0.27010 2007-07-01 0.28358 2007-10-01 0.29442 2011-04-01 1.44530 2011-07-01 1.35030 2011-10-01 1.29390 2012-01-01 2.67120 2012-04-01 1.25900 2012-07-01 1.29300 2012-10-01 1.31940 2013-04-01 0.65400 2013-07-01 0.67525 2013-10-01 0.68955 2014-01-01 2.18940 2014-04-01 1.50000 2014-07-01 1.50000 2014-10-01 1.67240 2015-01-01 1.22868 2015-04-01 1.27778