Quarter	Billions of US Dollars
1993-07-01	28.6496
1993-10-01	17.1964
1994-01-01	19.3748
1994-04-01	52.1596
1994-07-01	29.7832
1994-10-01	18.7111
1995-01-01	16.5781
1995-04-01	15.6100
1995-07-01	16.4902
1995-10-01	2.3231
1996-01-01	14.8819
1996-04-01	11.7353
1996-07-01	16.7939
1996-10-01	10.9286
1997-01-01	17.6591
1997-04-01	20.2584
1997-07-01	12.0421
1997-10-01	-8.8735
1998-01-01	12.5177
1998-04-01	19.6451
1998-07-01	9.3384
1998-10-01	-20.6162
1999-01-01	2.5242
1999-04-01	18.2155
1999-07-01	-7.5215
1999-10-01	8.5867
2000-01-01	19.2534
2000-04-01	6.9466
2000-07-01	33.2203
2000-10-01	-4.7463
2001-01-01	22.4076
2001-04-01	3.9585
2001-07-01	1.7949
2001-10-01	7.1252
2002-01-01	36.0222
2002-04-01	-9.1047
2002-07-01	6.3989
2002-10-01	4.4599
2003-01-01	31.5877
2003-04-01	28.4532
2003-07-01	8.6221
2003-10-01	-0.2376
2004-01-01	29.9791
2004-04-01	21.2065
2004-07-01	3.2533
2004-10-01	6.6233
2005-01-01	33.0247
2005-04-01	2.2759
2005-07-01	-8.7708
2005-10-01	20.4824
2006-01-01	39.6444
2006-04-01	2.8306
2006-07-01	-4.6359
2006-10-01	5.1623
2007-01-01	30.2135
2007-04-01	43.7712
2007-07-01	-5.4742
2007-10-01	-39.0621
2008-01-01	21.5661
2008-04-01	33.7484
2008-07-01	-21.8074
2008-10-01	13.8748
2009-01-01	51.1596
2009-04-01	69.1779
2009-07-01	14.5384
2009-10-01	14.8885
2010-01-01	53.5551
2010-04-01	33.7806
2010-07-01	38.1140
2010-10-01	21.1698
2011-01-01	29.0015
2011-04-01	18.6199
2011-07-01	10.2187
2011-10-01	9.4887
2012-01-01	-23.6095
2012-04-01	24.0684
2012-07-01	-15.9312
2012-10-01	52.0110
2013-01-01	-5.6221
2013-04-01	-8.1904
2013-07-01	35.4512
2013-10-01	8.9193
2014-01-01	0.5361
2014-04-01	35.7793
2014-07-01	15.4043
2014-10-01	12.8493
2015-01-01	-1.7940
2015-04-01	-8.8824