Quarter	Billions of US Dollars
1993-07-01	3.5235
1993-10-01	3.2217
1994-01-01	3.8018
1994-04-01	4.1312
1994-07-01	4.7126
1994-10-01	4.2858
1995-01-01	4.7144
1995-04-01	6.3558
1995-07-01	6.6535
1995-10-01	7.5816
1996-01-01	7.8123
1996-04-01	6.2381
1996-07-01	12.5113
1996-10-01	13.5346
1997-01-01	12.8833
1997-04-01	13.1069
1997-07-01	7.9700
1997-10-01	31.7603
1998-01-01	30.8108
1998-04-01	32.0520
1998-07-01	31.4774
1998-10-01	8.7596
1999-01-01	11.5409
1999-04-01	18.3773
1999-07-01	19.5656
1999-10-01	20.7076
2000-01-01	21.9784
2000-04-01	52.7992
2000-07-01	55.5188
2000-10-01	64.6584
2001-01-01	63.1558
2001-04-01	30.4072
2001-07-01	29.1228
2001-10-01	22.3891
2002-01-01	33.3604
2002-04-01	40.8898
2002-07-01	46.1455
2002-10-01	45.9999
2003-01-01	40.4522
2003-04-01	34.4679
2003-07-01	34.1650
2003-10-01	32.8941
2004-01-01	29.4850
2004-04-01	65.1850
2004-07-01	72.3729
2004-10-01	77.5277
2005-01-01	77.3956
2005-04-01	51.5727
2005-07-01	41.8049
2005-10-01	43.0109
2006-01-01	42.6273
2006-04-01	28.6979
2006-07-01	31.0206
2006-10-01	25.7958
2007-01-01	32.0133
2007-04-01	32.7495
2007-07-01	28.6019
2007-10-01	35.9384
2008-01-01	32.6009
2008-04-01	37.2886
2008-07-01	37.0314
2008-10-01	29.6182
2009-01-01	32.2264
2009-04-01	23.8881
2009-07-01	27.2649
2009-10-01	27.8884
2010-01-01	24.4916
2010-04-01	25.5163
2010-07-01	28.1035
2010-10-01	27.8990
2011-01-01	26.9713
2011-04-01	24.3130
2011-07-01	24.7617
2011-10-01	26.0780
2012-01-01	33.2289
2012-04-01	37.7709
2012-07-01	33.9627
2012-10-01	30.0973
2013-01-01	43.4199
2013-04-01	50.5479
2013-07-01	55.9718
2013-10-01	68.0593
2014-01-01	58.7833
2014-04-01	54.7975
2014-07-01	48.8159
2014-10-01	48.2010
2015-01-01	40.7532
2015-04-01	34.6387