Quarter	Billions of US Dollars
1999-07-01	0.40000
1999-10-01	0.40000
2000-01-01	0.40000
2000-04-01	0.90000
2000-07-01	0.50000
2000-10-01	0.50000
2001-01-01	0.50000
2001-04-01	0.10839
2001-07-01	0.11672
2001-10-01	0.11265
2002-01-01	0.11151
2002-04-01	0.53133
2002-07-01	0.98134
2002-10-01	0.98134
2003-01-01	1.78057
2003-04-01	1.27850
2003-07-01	1.05164
2003-10-01	1.95543
2004-01-01	2.32026
2004-04-01	3.58684
2004-07-01	3.62128
2004-10-01	2.79991
2005-01-01	1.52372
2005-04-01	2.23922
2005-07-01	2.75000
2005-10-01	3.10391
2006-01-01	4.11312
2006-04-01	2.13139
2006-07-01	1.47980
2006-10-01	1.96866
2007-01-01	2.23766
2007-04-01	2.33766
2007-07-01	2.98766
2007-10-01	2.11900
2008-01-01	1.25000
2008-04-01	1.10469
2008-07-01	0.67342
2008-10-01	2.91323
2009-01-01	3.96453
2009-04-01	3.66510
2009-07-01	3.31350
2009-10-01	1.76500
2010-01-01	0.70000
2010-04-01	1.70000
2010-07-01	2.45000
2010-10-01	1.75000
2011-01-01	2.35000
2011-04-01	2.07193
2011-07-01	2.07448
2011-10-01	2.04630
2012-01-01	2.34213
2012-04-01	2.57500
2012-07-01	1.77500
2012-10-01	1.77500
2013-01-01	0.90000
2013-04-01	2.03159
2013-07-01	2.03159
2013-10-01	2.03159
2014-01-01	2.28159
2014-04-01	0.75000
2014-07-01	1.25000
2014-10-01	1.25000
2015-01-01	1.75000
2015-04-01	2.25000