Quarter	Billions of US Dollars
1993-07-01	0.20150
1993-10-01	0.14500
1994-01-01	0.28320
1994-04-01	0.25348
1994-07-01	0.29214
1994-10-01	0.27977
1995-01-01	0.25294
1995-04-01	0.30356
1995-07-01	0.29851
1995-10-01	0.27930
1996-01-01	0.19628
1996-04-01	0.26835
1996-07-01	0.28041
1996-10-01	0.29628
1997-01-01	0.25776
1997-04-01	0.28878
1997-07-01	0.11801
1997-10-01	0.23182
1998-01-01	0.15166
1998-04-01	0.20586
1998-07-01	0.11740
1998-10-01	0.16819
1999-01-01	0.19888
1999-04-01	0.16856
1999-07-01	0.18869
1999-10-01	0.16557
2000-01-01	0.19732
2000-04-01	0.12414
2000-07-01	0.13112
2000-10-01	0.08819
2001-01-01	0.15457
2001-04-01	0.15882
2001-07-01	0.13128
2001-10-01	0.10297
2002-01-01	0.11391
2002-04-01	0.11985
2002-07-01	0.15834
2003-07-01	0.11240
2003-10-01	0.22822
2004-01-01	0.18755
2004-04-01	0.40336
2004-07-01	0.19807
2004-10-01	0.45810
2005-01-01	0.38116
2005-04-01	0.09603
2005-07-01	0.06922
2005-10-01	0.12414
2006-01-01	0.06988
2006-04-01	0.19345
2006-07-01	0.27245
2006-10-01	0.28850
2007-01-01	0.68650
2007-04-01	0.59857
2007-07-01	0.37570
2007-10-01	0.14783
2008-01-01	0.45367
2008-04-01	0.24641
2008-07-01	0.93468
2008-10-01	0.51994
2009-01-01	0.15622
2009-04-01	0.63210
2009-07-01	0.44136
2009-10-01	0.95763
2010-01-01	0.15258
2010-04-01	0.54676
2010-07-01	1.30115
2010-10-01	0.34960
2011-01-01	0.20919
2011-04-01	0.67742
2011-07-01	0.49718
2011-10-01	0.60407
2012-01-01	0.07865
2012-04-01	0.08000
2012-07-01	0.04000
2012-10-01	0.01700
2013-01-01	0.06660
2013-04-01	0.28617
2013-07-01	0.16556
2013-10-01	0.09298
2014-01-01	0.19197
2014-04-01	0.25367
2014-10-01	0.04996