Quarter	Billions of US Dollars
1993-07-01	0.3821
1993-10-01	0.3786
1994-01-01	0.7301
1994-04-01	0.7365
1994-07-01	0.6766
1994-10-01	0.6753
1995-01-01	0.6869
1995-04-01	0.6932
1995-07-01	0.7988
1995-10-01	1.0395
1996-01-01	1.5071
1996-04-01	1.8859
1996-07-01	1.8770
1996-10-01	2.1509
1997-01-01	3.0934
1997-04-01	3.1293
1997-07-01	3.0944
1997-10-01	3.0527
1998-01-01	3.4254
1998-04-01	3.9269
1998-07-01	4.6351
1998-10-01	4.7169
1999-01-01	5.0649
1999-04-01	5.5410
1999-07-01	5.6252
1999-10-01	6.1202
2000-01-01	6.8279
2000-04-01	7.0865
2000-07-01	7.2757
2000-10-01	7.4710
2001-01-01	8.1229
2001-04-01	9.6453
2001-07-01	10.1659
2001-10-01	10.9082
2002-01-01	10.6634
2002-04-01	10.2906
2002-07-01	10.6598
2002-10-01	11.3113
2003-01-01	11.5008
2003-04-01	11.0604
2003-07-01	11.5162
2003-10-01	11.7103
2004-01-01	11.4752
2004-04-01	11.4533
2004-07-01	11.9934
2004-10-01	12.6324
2005-01-01	12.9518
2005-04-01	12.9508
2005-07-01	13.1343
2005-10-01	13.2198
2006-01-01	13.0077
2006-04-01	12.3921
2006-07-01	14.6146
2006-10-01	15.1748
2007-01-01	14.7520
2007-04-01	15.6595
2007-07-01	15.9630
2007-10-01	16.0672
2008-01-01	16.0509
2008-04-01	15.7756
2008-07-01	15.1785
2008-10-01	15.1641
2009-01-01	15.7128
2009-04-01	16.2873
2009-07-01	16.7250
2009-10-01	18.0011
2010-01-01	17.4931
2010-04-01	18.0819
2010-07-01	18.6486
2010-10-01	18.2560
2011-01-01	18.4959
2011-04-01	17.8792
2011-07-01	19.6249
2011-10-01	19.4280
2012-01-01	20.1017
2012-04-01	20.0822
2012-07-01	20.6784
2012-10-01	20.3958
2013-01-01	20.1091
2013-04-01	19.8571
2013-07-01	21.4905
2013-10-01	21.4391
2014-01-01	23.3525
2014-04-01	23.5538
2014-07-01	23.1910
2014-10-01	22.5112
2015-01-01	24.7581
2015-04-01	24.7510