Quarter	Billions of US Dollars
1993-07-01	8.08022
1993-10-01	7.86063
1994-01-01	8.21028
1994-04-01	8.12771
1994-07-01	7.89722
1994-10-01	7.81527
1995-01-01	7.74966
1995-04-01	6.98648
1995-07-01	6.61853
1995-10-01	6.11843
1996-01-01	5.59555
1996-04-01	5.53078
1996-07-01	5.21060
1996-10-01	4.77765
1997-01-01	3.66687
1997-04-01	3.58090
1997-07-01	3.58918
1997-10-01	3.89085
1998-01-01	3.64520
1998-04-01	3.61688
1998-07-01	3.44652
1998-10-01	3.62836
1999-01-01	3.27245
1999-04-01	3.25321
1999-07-01	3.31709
1999-10-01	3.14638
2000-01-01	3.22854
2000-04-01	3.09296
2000-07-01	2.87324
2000-10-01	2.87907
2001-01-01	2.38887
2001-04-01	2.41508
2001-07-01	2.46347
2001-10-01	2.38387
2002-01-01	2.29195
2002-04-01	2.37603
2002-07-01	2.31024
2002-10-01	2.36244
2003-01-01	2.29479
2003-04-01	2.71512
2003-07-01	2.67164
2003-10-01	2.85118
2004-01-01	2.43171
2004-04-01	2.44526
2004-07-01	2.52867
2004-10-01	2.54094
2005-01-01	2.13087
2005-04-01	1.99210
2005-07-01	1.78640
2005-10-01	1.65235
2006-01-01	1.48369
2006-04-01	1.50804
2006-07-01	1.50077
2006-10-01	1.24891
2007-01-01	1.23571
2007-04-01	1.25077
2007-07-01	1.28942
2007-10-01	1.29086
2008-01-01	1.16308
2008-04-01	0.74755
2008-07-01	0.85041
2008-10-01	0.77740
2009-01-01	0.86077
2009-04-01	0.86641
2009-07-01	0.78054
2009-10-01	0.77504
2010-01-01	0.77176
2010-04-01	0.78296
2010-07-01	0.79746
2010-10-01	0.80308
2011-01-01	0.69833
2011-04-01	0.80547
2011-07-01	0.81850
2011-10-01	0.81477
2012-01-01	0.85518
2012-04-01	0.59157
2012-07-01	0.54134
2012-10-01	1.32786
2013-01-01	2.37134
2013-04-01	0.67745
2013-07-01	0.90130
2013-10-01	0.89550
2014-01-01	1.35933
2014-04-01	1.35102
2014-07-01	1.27252
2014-10-01	1.21520
2015-01-01	1.17209
2015-04-01	1.50350