Quarter	Billions of US Dollars
1990-07-01	-0.02000
1992-01-01	-0.01700
1992-10-01	-0.01300
1993-07-01	0.06160
1994-10-01	0.09660
1998-07-01	0.13661
2000-07-01	-0.01156
2001-04-01	0.38557
2001-07-01	-0.01138
2001-10-01	-0.06867
2002-01-01	0.07052
2003-04-01	0.40000
2004-04-01	-0.40000
2004-07-01	0.12300
2004-10-01	0.45272
2005-01-01	0.05635
2005-04-01	0.09476
2005-07-01	0.42263
2005-10-01	0.41594
2006-01-01	0.71538
2006-04-01	-0.43956
2006-07-01	1.59253
2006-10-01	1.54407
2007-01-01	1.41529
2007-04-01	0.95008
2007-07-01	0.12431
2007-10-01	0.39713
2008-01-01	1.49749
2008-04-01	0.78129
2008-07-01	0.57739
2008-10-01	-0.24046
2009-01-01	-0.97570
2009-04-01	-0.06769
2009-07-01	-0.14390
2009-10-01	0.61806
2010-01-01	-0.87175
2010-04-01	-0.66701
2010-07-01	-0.11846
2010-10-01	-0.58845
2011-01-01	-0.66335
2011-04-01	-0.15588
2011-07-01	0.09337
2011-10-01	0.11836
2012-01-01	-0.26586
2012-04-01	-0.52564
2012-07-01	0.36275
2012-10-01	1.13427
2013-10-01	0.00286
2014-01-01	-0.07150
2014-04-01	-0.66258
2014-07-01	-0.98130
2014-10-01	1.08099
2015-01-01	-0.13658
2015-04-01	0.53325