Quarter	Billions of US Dollars
1993-07-01	0.24950
1993-10-01	0.21700
1994-01-01	0.29473
1994-04-01	0.30169
1994-07-01	0.31794
1994-10-01	0.31795
1995-01-01	0.29072
1995-04-01	0.31795
1995-07-01	0.34434
1995-10-01	0.30802
1996-01-01	0.29524
1996-04-01	0.27318
1996-07-01	0.04600
1996-10-01	0.29553
1997-01-01	0.30435
1997-04-01	0.33453
1997-07-01	0.29748
1997-10-01	0.24680
1998-01-01	0.23537
1998-04-01	0.24028
1998-07-01	0.23931
1998-10-01	0.18450
1999-01-01	0.21692
1999-04-01	0.19299
1999-07-01	0.19197
1999-10-01	0.19841
2000-01-01	0.19106
2000-04-01	0.15099
2000-07-01	0.16215
2000-10-01	0.09445
2001-01-01	0.16604
2001-04-01	0.46918
2001-07-01	0.43468
2001-10-01	0.40135
2002-01-01	0.42214
2002-04-01	0.13017
2002-07-01	0.19671
2002-10-01	0.03566
2003-07-01	0.11652
2003-10-01	0.24250
2004-01-01	0.26893
2004-04-01	0.44973
2004-07-01	0.14891
2004-10-01	0.27242
2005-01-01	0.33706
2005-04-01	0.41596
2005-07-01	0.40461
2005-10-01	0.33032
2006-01-01	0.33891
2007-07-01	0.48991
2007-10-01	0.50864
2008-01-01	0.54633
2008-04-01	0.54467
2008-07-01	0.28606
2008-10-01	0.52885
2009-01-01	0.15570
2009-04-01	0.61342
2009-07-01	0.41586
2009-10-01	0.90470
2010-01-01	0.35450
2010-04-01	0.64689
2010-07-01	0.57690
2010-10-01	0.32737
2011-01-01	1.30219
2011-04-01	1.65311
2011-07-01	1.61931
2011-10-01	1.76130
2012-01-01	0.78133
2012-04-01	1.96850
2012-10-01	1.97910
2013-01-01	1.92715
2013-04-01	0.38586
2013-07-01	0.95886
2013-10-01	0.76147
2014-01-01	0.82728
2014-04-01	0.93557
2014-10-01	1.26266
2015-01-01	1.23191
2015-04-01	1.28114