Quarter	Billions of US Dollars
1998-04-01	0.02759
1998-07-01	0.02817
1999-01-01	0.02660
1999-07-01	0.02518
1999-10-01	0.37106
2000-01-01	0.32705
2000-04-01	0.17589
2000-07-01	0.02779
2000-10-01	0.57735
2001-01-01	0.29349
2001-04-01	0.02507
2001-10-01	0.09802
2002-04-01	0.00519
2003-01-01	0.06590
2003-04-01	0.03650
2003-07-01	0.16517
2003-10-01	0.20585
2004-01-01	0.26388
2004-04-01	0.31075
2004-07-01	0.14994
2004-10-01	0.48228
2005-01-01	0.45685
2005-04-01	0.68826
2005-07-01	0.66883
2005-10-01	0.57091
2006-01-01	0.79567
2006-04-01	0.37999
2006-07-01	0.65833
2006-10-01	0.92014
2007-01-01	1.46200
2007-04-01	1.31251
2007-07-01	1.78296
2007-10-01	1.55270
2008-01-01	1.64530
2008-04-01	1.89277
2008-07-01	2.13409
2008-10-01	1.50082
2009-01-01	1.31523
2009-04-01	1.37445
2009-07-01	1.68749
2009-10-01	1.40285
2010-01-01	1.48925
2010-04-01	1.25804
2010-07-01	1.37992
2010-10-01	1.17116
2011-01-01	1.17468
2011-04-01	2.90804
2011-07-01	1.83442
2011-10-01	0.29266
2012-01-01	0.19629
2012-04-01	0.18522
2012-07-01	0.18519
2012-10-01	0.22718
2013-01-01	0.22987
2013-04-01	0.14247
2013-07-01	0.13781
2013-10-01	0.11729
2014-01-01	0.11750
2014-04-01	0.10452
2014-07-01	0.09547
2014-10-01	0.08409
2015-01-01	0.07228
2015-04-01	0.07254