Quarter	Billions of US Dollars
1992-07-01	0.10000
1992-10-01	0.10000
1993-01-01	0.10000
1993-04-01	0.10000
1993-07-01	0.10000
1993-10-01	0.07500
1994-01-01	0.18096
1994-04-01	0.32072
1994-07-01	0.40040
1994-10-01	0.40209
1995-01-01	0.34349
1995-04-01	0.28022
1995-07-01	0.11912
1995-10-01	0.33553
1996-01-01	0.33440
1996-04-01	0.31910
1996-07-01	0.51784
1996-10-01	0.64297
1997-01-01	0.61063
1997-04-01	0.64920
1997-07-01	0.58464
1997-10-01	0.61072
1998-01-01	0.54738
1998-04-01	0.72185
1998-07-01	0.78642
1998-10-01	0.79221
1999-01-01	0.68023
1999-04-01	0.69765
1999-07-01	0.76556
1999-10-01	0.78280
2000-01-01	0.75996
2000-04-01	0.75005
2000-07-01	0.80204
2000-10-01	0.78997
2001-01-01	0.74617
2001-04-01	0.74083
2001-07-01	0.71538
2001-10-01	0.61654
2002-01-01	0.56440
2002-04-01	0.58782
2002-07-01	0.57039
2002-10-01	0.58149
2003-01-01	0.58839
2003-04-01	0.59646
2003-07-01	0.53261
2003-10-01	0.55094
2004-01-01	0.48109
2004-04-01	0.47267
2004-07-01	0.47607
2004-10-01	0.51932
2005-01-01	0.47192
2005-04-01	0.45227
2005-07-01	0.45744
2005-10-01	0.44784
2006-01-01	0.42306
2006-04-01	0.46011
2006-07-01	0.45652
2006-10-01	0.57761
2007-01-01	0.73095
2007-04-01	0.89340
2007-07-01	0.86290
2007-10-01	0.84487
2008-01-01	0.88636
2008-04-01	0.89088
2008-07-01	0.80326
2008-10-01	0.77183
2009-01-01	0.76323
2009-04-01	0.80174
2009-07-01	0.85892
2009-10-01	0.84407
2010-01-01	0.83098
2010-04-01	0.77952
2010-07-01	1.06396
2010-10-01	1.18991
2011-01-01	1.40214
2011-04-01	1.39510
2011-07-01	1.36594
2011-10-01	1.25815
2012-01-01	1.26425
2012-04-01	1.21980
2012-07-01	1.22880
2012-10-01	1.23125
2013-01-01	1.22755
2013-04-01	1.21886
2013-07-01	1.59789
2013-10-01	1.59662
2014-01-01	1.60094
2014-04-01	1.60277
2014-07-01	1.57448
2014-10-01	1.64638
2015-01-01	1.60043
2015-04-01	1.60917