Quarter	Billions of US Dollars
1993-07-01	0.42980
1993-10-01	0.31620
1994-01-01	0.60594
1994-04-01	0.63378
1994-07-01	0.51982
1994-10-01	0.58792
1995-01-01	0.65043
1995-04-01	0.79497
1995-07-01	1.33051
1995-10-01	1.58123
1996-01-01	1.55426
1996-04-01	1.51404
1996-07-01	1.11811
1996-10-01	1.10507
1997-01-01	1.37070
1997-04-01	1.68301
1997-07-01	1.53652
1997-10-01	1.76605
1998-01-01	1.67089
1998-04-01	1.43087
1998-07-01	2.16065
1998-10-01	2.32668
1999-01-01	2.16311
1999-04-01	2.53827
1999-07-01	2.25752
1999-10-01	1.95823
2000-01-01	1.00606
2000-04-01	0.83863
2000-07-01	0.45765
2000-10-01	0.93387
2001-01-01	1.40902
2001-04-01	1.31664
2001-07-01	1.57924
2001-10-01	0.96542
2002-01-01	0.90556
2002-04-01	1.36001
2002-07-01	1.81464
2002-10-01	2.08356
2003-01-01	2.95437
2003-04-01	2.76789
2003-07-01	2.09504
2003-10-01	1.97947
2004-01-01	0.73790
2004-04-01	0.32647
2004-07-01	1.01080
2004-10-01	1.43642
2005-01-01	1.04261
2005-04-01	1.53693
2005-07-01	0.89174
2005-10-01	0.57201
2006-01-01	0.58690
2006-04-01	0.04434
2006-10-01	0.25221
2007-01-01	0.46749
2007-04-01	0.44632
2007-07-01	0.48514
2007-10-01	0.27796
2008-01-01	1.24965
2008-04-01	1.36592
2008-07-01	1.61990
2008-10-01	2.19932
2009-01-01	2.43579
2009-04-01	2.64010
2009-07-01	3.46111
2009-10-01	3.11619
2010-01-01	2.74697
2010-04-01	2.50641
2010-07-01	3.86186
2010-10-01	5.03418
2011-01-01	4.15831
2011-04-01	3.96434
2011-07-01	2.62925
2011-10-01	0.76617
2012-01-01	0.68116
2012-04-01	0.12590
2012-10-01	1.84925
2013-01-01	1.88105
2013-04-01	2.36008
2013-07-01	3.44152
2013-10-01	1.85956
2014-01-01	1.94825
2014-04-01	1.52970
2014-07-01	1.11240
2014-10-01	0.91330
2015-01-01	0.14153
2015-04-01	0.64556