Quarter	Billions of US Dollars
1993-07-01	1.9256
1993-10-01	1.4515
1994-01-01	1.1488
1994-04-01	0.9220
1994-07-01	1.3541
1994-10-01	1.6568
1995-01-01	1.8548
1995-04-01	2.2816
1995-07-01	2.3055
1995-10-01	2.0905
1996-01-01	1.8946
1996-04-01	1.3522
1996-07-01	0.8785
1996-10-01	0.8051
1997-01-01	1.0233
1997-04-01	1.4615
1997-07-01	1.3124
1997-10-01	1.7538
1998-01-01	2.0701
1998-04-01	1.8121
1998-07-01	1.6841
1998-10-01	1.6974
1999-01-01	1.7712
1999-04-01	1.7712
1999-07-01	1.9338
1999-10-01	1.7034
2000-01-01	1.4345
2000-04-01	1.5646
2000-07-01	1.6006
2000-10-01	1.8159
2001-01-01	2.6742
2001-04-01	1.9625
2001-07-01	2.2392
2001-10-01	1.8752
2002-01-01	2.4224
2002-04-01	2.6931
2002-07-01	2.5805
2002-10-01	2.8650
2003-01-01	4.5681
2003-04-01	5.3003
2003-07-01	5.3585
2003-10-01	7.2576
2004-01-01	9.0164
2004-04-01	8.5882
2004-07-01	8.2592
2004-10-01	8.7794
2005-01-01	7.7896
2005-04-01	6.2388
2005-07-01	6.7812
2005-10-01	8.6340
2006-01-01	9.4784
2006-04-01	11.9861
2006-07-01	13.0728
2006-10-01	14.5953
2007-01-01	16.3601
2007-04-01	16.7855
2007-07-01	14.1751
2007-10-01	15.4614
2008-01-01	20.4107
2008-04-01	24.2650
2008-07-01	26.3295
2008-10-01	30.0296
2009-01-01	33.2077
2009-04-01	31.0216
2009-07-01	46.0412
2009-10-01	39.4771
2010-01-01	34.4605
2010-04-01	32.9948
2010-07-01	25.4556
2010-10-01	24.2436
2011-01-01	24.9844
2011-04-01	26.2544
2011-07-01	26.9503
2011-10-01	25.6889
2012-01-01	28.5655
2012-04-01	21.3613
2012-07-01	24.2670
2012-10-01	24.2210
2013-01-01	24.5356
2013-04-01	27.9655
2013-07-01	27.7056
2013-10-01	26.7163
2014-01-01	22.3784
2014-04-01	18.7336
2014-07-01	17.1489
2014-10-01	20.3383
2015-01-01	18.1740
2015-04-01	19.6772