Quarter	Billions of US Dollars
1997-10-01	0.4000
1998-04-01	0.1000
1998-07-01	0.1005
1998-10-01	0.2199
1999-01-01	0.2199
1999-04-01	0.5005
1999-07-01	0.5000
1999-10-01	0.2807
2000-01-01	0.2807
2000-04-01	0.4417
2000-07-01	0.4051
2000-10-01	1.4301
2001-01-01	1.4082
2001-04-01	1.3000
2001-07-01	1.3000
2001-10-01	0.4000
2002-01-01	0.4100
2002-04-01	1.7464
2002-07-01	1.7419
2002-10-01	1.6662
2003-01-01	2.7861
2003-04-01	1.1685
2003-07-01	1.1915
2003-10-01	1.7336
2004-01-01	1.2091
2004-04-01	1.2023
2004-07-01	4.4640
2004-10-01	4.1071
2005-01-01	3.5201
2005-04-01	4.0038
2005-07-01	1.0488
2005-10-01	1.0390
2006-01-01	1.1528
2006-04-01	3.0687
2006-07-01	3.1702
2006-10-01	3.1702
2007-01-01	3.1702
2007-04-01	0.7702
2007-07-01	0.7702
2007-10-01	0.7702
2008-01-01	1.0749
2008-04-01	1.0749
2008-07-01	1.3795
2008-10-01	1.3795
2009-01-01	1.3797
2009-04-01	1.3797
2009-07-01	1.1977
2009-10-01	1.1977
2010-01-01	1.1171
2010-04-01	1.1171
2010-07-01	1.2186
2010-10-01	1.7184
2011-01-01	1.7500
2011-04-01	1.7592
2011-07-01	1.7236
2011-10-01	1.2186
2012-01-01	1.2186
2012-04-01	1.2186
2012-07-01	1.2186
2012-10-01	1.2186
2013-01-01	13.6778
2013-04-01	13.6778
2013-07-01	13.6778
2013-10-01	13.6778
2014-01-01	1.2186
2014-04-01	3.2186
2014-07-01	3.2186
2014-10-01	3.2186
2015-01-01	3.2186
2015-04-01	1.2186