Quarter	Billions of US Dollars
1996-01-01	0.00240
1996-04-01	0.00711
1996-07-01	0.00938
1996-10-01	0.00732
1997-01-01	0.00050
1997-04-01	0.00861
1997-07-01	0.00861
1997-10-01	0.13298
1998-01-01	0.13181
1998-04-01	0.13183
1998-07-01	0.13187
1998-10-01	0.13155
1999-01-01	0.13155
1999-04-01	0.12687
1999-07-01	0.12632
1999-10-01	0.12164
2000-01-01	0.12164
2000-04-01	0.11696
2000-07-01	0.11696
2000-10-01	0.11229
2001-01-01	0.37725
2001-04-01	0.36201
2001-07-01	0.38154
2001-10-01	0.36732
2002-01-01	0.36465
2002-04-01	0.39750
2002-07-01	0.39405
2002-10-01	0.40818
2003-01-01	0.42042
2003-04-01	0.43170
2003-07-01	0.45345
2003-10-01	0.47811
2004-01-01	0.47393
2004-04-01	0.46718
2004-07-01	0.46380
2004-10-01	0.49548
2005-01-01	0.46777
2005-04-01	0.43693
2005-07-01	0.43143
2005-10-01	0.41940
2006-01-01	0.36549
2006-04-01	0.36549
2006-07-01	0.36549
2006-10-01	0.65614
2007-01-01	0.65614
2007-04-01	0.65146
2007-07-01	0.65146
2007-10-01	0.64679
2008-01-01	0.64679
2008-04-01	0.64211
2008-07-01	0.64211
2008-10-01	0.63743
2009-01-01	0.63743
2009-04-01	0.63275
2009-07-01	0.63275
2009-10-01	0.63275
2010-01-01	0.63275
2010-04-01	0.62339
2010-07-01	0.62339
2010-10-01	0.61871
2011-01-01	0.61871
2011-04-01	0.61404
2011-07-01	1.17904
2011-10-01	1.17904
2012-01-01	1.17436
2012-04-01	1.17436
2012-07-01	1.16968
2012-10-01	1.76500
2013-01-01	2.07500
2013-04-01	2.37500
2013-07-01	2.37500
2013-10-01	2.37500
2014-01-01	2.37500
2014-04-01	3.41250
2014-07-01	3.41250
2014-10-01	3.41250
2015-01-01	3.41250
2015-04-01	3.71250