Quarter	Billions of US Dollars
1993-07-01	7.4180
1993-10-01	4.1612
1994-01-01	6.8864
1994-04-01	1.6893
1994-07-01	2.2967
1994-10-01	2.4148
1995-01-01	3.0477
1995-04-01	1.6919
1995-07-01	2.4687
1995-10-01	2.7775
1996-01-01	3.7666
1996-04-01	2.7594
1996-07-01	6.6488
1996-10-01	10.3476
1997-01-01	19.1728
1997-04-01	8.6780
1997-07-01	7.3298
1997-10-01	-0.3121
1998-01-01	16.2448
1998-04-01	10.7761
1998-07-01	8.6055
1998-10-01	13.1042
1999-01-01	15.2445
1999-04-01	20.1330
1999-07-01	13.9636
1999-10-01	8.7424
2000-01-01	14.3712
2000-04-01	9.8253
2000-07-01	18.5515
2000-10-01	23.4458
2001-01-01	13.4593
2001-04-01	10.8710
2001-07-01	7.6168
2001-10-01	16.2734
2002-01-01	9.2653
2002-04-01	7.3926
2002-07-01	12.9796
2002-10-01	9.9088
2003-01-01	14.5624
2003-04-01	12.4771
2003-07-01	14.5643
2003-10-01	25.6027
2004-01-01	15.2669
2004-04-01	22.3612
2004-07-01	20.0517
2004-10-01	21.5157
2005-01-01	32.1914
2005-04-01	17.9774
2005-07-01	18.0204
2005-10-01	32.9671
2006-01-01	37.5709
2006-04-01	36.8859
2006-07-01	29.0002
2006-10-01	23.1337
2007-01-01	42.0339
2007-04-01	53.4868
2007-07-01	26.4760
2007-10-01	13.3472
2008-01-01	34.0804
2008-04-01	21.6583
2008-07-01	-0.9346
2008-10-01	25.0741
2009-01-01	37.6031
2009-04-01	39.4755
2009-07-01	30.0669
2009-10-01	-7.1878
2010-01-01	7.4436
2010-04-01	11.8259
2010-07-01	-3.4148
2010-10-01	-15.4268
2011-01-01	5.6415
2011-04-01	20.0693
2011-07-01	2.8392
2011-10-01	-14.5101
2012-01-01	24.5628
2012-04-01	15.6587
2012-07-01	20.0999
2012-10-01	21.1641
2013-01-01	4.7995
2013-04-01	10.9301
2013-07-01	12.7171
2013-10-01	1.3669
2014-01-01	17.9685
2014-04-01	13.2662
2014-07-01	-4.1008
2014-10-01	-14.2266
2015-01-01	19.4604
2015-04-01	23.6910