Quarter	Billions of US Dollars
1993-07-01	11.4840
1993-10-01	10.1787
1994-01-01	9.9194
1994-04-01	13.2915
1994-07-01	38.2759
1994-10-01	18.9576
1995-01-01	11.0367
1995-04-01	21.6214
1995-07-01	28.6233
1995-10-01	14.8790
1996-01-01	16.0376
1996-04-01	19.4694
1996-07-01	24.8581
1996-10-01	20.0320
1997-01-01	14.5127
1997-04-01	12.7425
1997-07-01	8.8577
1997-10-01	-1.7736
1998-01-01	-6.8390
1998-04-01	-7.7493
1998-07-01	-7.3312
1998-10-01	-10.7997
1999-01-01	-8.6782
1999-04-01	-6.3659
1999-07-01	-0.1569
1999-10-01	-8.1992
2000-01-01	-2.5778
2000-04-01	12.3828
2000-07-01	5.8520
2000-10-01	-5.5597
2001-01-01	0.3274
2001-04-01	8.5799
2001-07-01	6.8858
2001-10-01	2.4992
2002-01-01	-17.9945
2002-04-01	7.1037
2002-07-01	-5.1533
2002-10-01	-3.1434
2003-01-01	-3.9177
2003-04-01	-2.0063
2003-07-01	-3.6663
2003-10-01	11.8096
2004-01-01	5.7827
2004-04-01	14.8078
2004-07-01	7.2096
2004-10-01	-2.1635
2005-01-01	4.0346
2005-04-01	-7.8057
2005-07-01	0.2558
2005-10-01	5.2214
2006-01-01	-2.1740
2006-04-01	4.9721
2006-07-01	2.3177
2006-10-01	13.3224
2007-01-01	7.2986
2007-04-01	28.1532
2007-07-01	17.9328
2007-10-01	13.7565
2008-01-01	4.0776
2008-04-01	15.3240
2008-07-01	7.8781
2008-10-01	-9.7247
2009-01-01	-7.7594
2009-04-01	-11.7427
2009-07-01	-9.8059
2009-10-01	-12.6508
2010-01-01	-13.8155
2010-04-01	-13.7843
2010-07-01	6.2511
2010-10-01	1.5191
2011-01-01	-4.8100
2011-04-01	-12.5403
2011-07-01	-7.8087
2011-10-01	-7.4307
2012-01-01	-4.5663
2012-04-01	-11.3061
2012-07-01	-8.8262
2012-10-01	2.7067
2013-01-01	-28.7053
2013-04-01	-22.7725
2013-07-01	-5.4717
2013-10-01	5.8284
2014-01-01	-8.2765
2014-04-01	2.9380
2014-07-01	-0.4954
2014-10-01	-1.2710
2015-01-01	-7.1321
2015-04-01	-2.3739