Quarter	Billions of US Dollars
1981-10-01	0.0250
1982-01-01	0.0250
1982-04-01	0.0250
1982-07-01	0.0250
1982-10-01	0.0250
1983-01-01	0.0250
1983-04-01	0.0250
1983-07-01	0.0250
1983-10-01	0.0250
1984-01-01	0.0250
1984-04-01	0.0250
1984-07-01	0.0250
1984-10-01	0.0250
1985-01-01	0.0250
1985-04-01	0.0250
1985-07-01	0.0250
1985-10-01	0.0250
1986-01-01	0.0250
1986-04-01	0.0250
1986-07-01	0.0250
1994-01-01	0.0710
1994-04-01	0.1110
1994-07-01	0.1110
1994-10-01	0.1110
1995-01-01	0.1110
1995-04-01	0.1110
1995-07-01	0.1110
1995-10-01	0.1033
1996-01-01	0.0955
1996-04-01	0.0955
1996-07-01	0.0878
1996-10-01	0.0878
1997-01-01	4.9155
1997-04-01	4.9255
1997-07-01	4.9255
1997-10-01	4.9255
1998-01-01	4.9305
1998-04-01	4.9305
1998-07-01	4.9255
1998-10-01	4.3354
1999-01-01	4.3354
1999-04-01	4.3354
1999-07-01	4.3347
1999-10-01	4.3339
2000-01-01	4.3339
2000-04-01	4.3339
2000-07-01	4.3339
2000-10-01	4.3304
2001-01-01	4.3304
2001-04-01	4.3304
2001-07-01	4.3304
2001-10-01	4.3304
2002-01-01	5.0700
2002-04-01	5.0018
2002-07-01	5.0018
2002-10-01	4.5837
2003-01-01	5.3155
2003-04-01	5.3155
2003-07-01	5.2791
2003-10-01	4.8688
2004-01-01	4.8688
2004-04-01	5.3688
2004-07-01	5.3688
2004-10-01	6.2542
2005-01-01	6.5448
2005-04-01	6.4881
2005-07-01	7.2349
2005-10-01	7.9990
2006-01-01	8.1189
2006-04-01	8.1585
2006-07-01	8.3681
2006-10-01	9.1552
2007-01-01	10.5820
2007-04-01	10.7862
2007-07-01	11.8901
2007-10-01	12.1500
2008-01-01	10.9425
2008-04-01	10.8002
2008-07-01	10.8527
2008-10-01	10.5893
2009-01-01	11.5420
2009-04-01	11.6819
2009-07-01	12.8344
2009-10-01	13.3911
2010-01-01	13.6929
2010-04-01	14.6069
2010-07-01	15.4985
2010-10-01	18.5074
2011-01-01	19.3245
2011-04-01	19.4018
2011-07-01	19.9850
2011-10-01	20.6884
2012-01-01	23.9645
2012-04-01	25.8078
2012-07-01	26.8783
2012-10-01	26.9918
2013-01-01	28.7695
2013-04-01	30.3241
2013-07-01	30.3274
2013-10-01	30.9862
2014-01-01	32.2691
2014-04-01	32.9482
2014-07-01	34.1936
2014-10-01	37.9630
2015-01-01	38.9025
2015-04-01	39.6750