Quarter Billions of US Dollars 1993-07-01 0.2000 1993-10-01 0.2000 1994-01-01 0.2000 1994-04-01 0.2000 1994-07-01 0.2000 1994-10-01 0.2000 1995-01-01 0.2000 1995-04-01 0.2000 1995-07-01 0.2000 1995-10-01 0.2000 1996-01-01 0.2000 1996-04-01 0.2000 1996-07-01 0.2000 1996-10-01 0.2400 1997-01-01 0.2400 1997-04-01 0.2400 1997-07-01 0.2400 1997-10-01 0.2400 1998-01-01 0.5711 1998-04-01 0.7561 1998-07-01 0.9981 1998-10-01 1.0343 1999-01-01 1.1067 1999-04-01 1.3211 1999-07-01 1.4002 1999-10-01 1.5326 2000-01-01 1.5707 2000-04-01 2.1829 2000-07-01 2.1785 2000-10-01 2.1947 2001-01-01 2.0825 2001-04-01 2.2344 2001-07-01 2.7255 2001-10-01 2.6773 2002-01-01 2.6732 2002-04-01 2.4834 2002-07-01 2.4876 2002-10-01 2.6223 2003-01-01 2.6289 2003-04-01 2.0465 2003-07-01 1.5113 2003-10-01 1.5068 2004-01-01 1.5249 2004-04-01 1.5216 2004-07-01 1.5273 2004-10-01 1.4203 2005-01-01 1.3914 2005-04-01 1.6643 2005-07-01 1.6637 2005-10-01 1.8560 2006-01-01 1.7072 2006-04-01 1.7097 2006-07-01 1.7095 2006-10-01 2.4216 2007-01-01 2.4222 2007-04-01 3.1730 2007-07-01 3.4512 2007-10-01 3.4540 2008-01-01 4.0341 2008-04-01 3.6296 2008-07-01 4.0242 2008-10-01 3.7871 2009-01-01 5.2368 2009-04-01 6.6821 2009-07-01 6.7179 2009-10-01 6.9872 2010-01-01 6.9927 2010-04-01 6.9151 2010-07-01 7.2277 2010-10-01 7.7955 2011-01-01 8.2788 2011-04-01 9.0333 2011-07-01 8.6477 2011-10-01 9.3371 2012-01-01 9.7665 2012-04-01 10.7893 2012-07-01 12.2835 2012-10-01 12.1266 2013-01-01 12.6997 2013-04-01 12.4659 2013-07-01 14.4241 2013-10-01 14.8048 2014-01-01 15.3053 2014-04-01 13.7511 2014-07-01 13.6924 2014-10-01 13.5132 2015-01-01 13.7194 2015-04-01 14.0796