Quarter	Billions of US Dollars
1993-07-01	0.7190
1993-10-01	0.7214
1994-01-01	0.6414
1994-04-01	0.5916
1994-07-01	0.5667
1994-10-01	0.6624
1995-01-01	1.1500
1995-04-01	2.5444
1995-07-01	3.0205
1995-10-01	3.0817
1996-01-01	2.5395
1996-04-01	2.5526
1996-07-01	2.7191
1996-10-01	5.7062
1997-01-01	5.7871
1997-04-01	5.7487
1997-07-01	5.1166
1997-10-01	4.3686
1998-01-01	4.3921
1998-04-01	6.4345
1998-07-01	7.4594
1998-10-01	8.1136
1999-01-01	8.3275
1999-04-01	7.8533
1999-07-01	7.9811
1999-10-01	8.0070
2000-01-01	7.7185
2000-04-01	7.2518
2000-07-01	7.8268
2000-10-01	7.3194
2001-01-01	8.1990
2001-04-01	7.7369
2001-07-01	6.4809
2001-10-01	7.4307
2002-01-01	5.0952
2002-04-01	4.9301
2002-07-01	4.0325
2002-10-01	3.0026
2003-01-01	3.0964
2003-04-01	4.4774
2003-07-01	5.3392
2003-10-01	5.7216
2004-01-01	5.7593
2004-04-01	4.6000
2004-07-01	6.1335
2004-10-01	7.0030
2005-01-01	8.6933
2005-04-01	8.5800
2005-07-01	7.3484
2005-10-01	8.1742
2006-01-01	8.6289
2006-04-01	8.8046
2006-07-01	9.4994
2006-10-01	11.6304
2007-01-01	11.2659
2007-04-01	13.7935
2007-07-01	17.8791
2007-10-01	17.5643
2008-01-01	20.9935
2008-04-01	22.6726
2008-07-01	20.3870
2008-10-01	16.4778
2009-01-01	17.0099
2009-04-01	20.4093
2009-07-01	22.3674
2009-10-01	22.2285
2010-01-01	21.1421
2010-04-01	20.3596
2010-07-01	20.7270
2010-10-01	17.6380
2011-01-01	21.2607
2011-04-01	24.1605
2011-07-01	23.7566
2011-10-01	29.4160
2012-01-01	26.5221
2012-04-01	23.0382
2012-07-01	27.3357
2012-10-01	20.5552
2013-01-01	24.1088
2013-04-01	26.4771
2013-07-01	29.3769
2013-10-01	30.1117
2014-01-01	31.0097
2014-04-01	28.3572
2014-07-01	29.6581
2014-10-01	36.0509
2015-01-01	36.8765
2015-04-01	37.0888