Quarter	Billions of US Dollars
1993-07-01	0.35555
1993-10-01	0.31700
1994-01-01	0.29900
1994-04-01	0.17900
1994-07-01	0.25700
1994-10-01	0.26500
1995-01-01	0.29000
1995-04-01	0.38515
1995-07-01	0.36715
1995-10-01	0.36169
1996-01-01	0.54868
1996-04-01	0.40179
1996-07-01	0.20985
1996-10-01	0.37322
1997-01-01	0.29201
1997-04-01	0.22800
1997-07-01	0.32714
1997-10-01	0.31789
1998-01-01	0.39741
1998-04-01	0.38093
1998-07-01	0.31850
1998-10-01	0.37552
1999-01-01	0.44789
1999-04-01	0.43569
1999-07-01	0.60147
1999-10-01	0.47609
2000-01-01	0.29692
2000-04-01	0.46938
2000-07-01	0.54285
2000-10-01	0.58552
2001-01-01	0.71108
2001-04-01	0.49788
2001-07-01	0.53370
2001-10-01	0.57247
2002-01-01	0.39642
2002-04-01	0.46944
2002-07-01	0.59169
2002-10-01	0.53318
2003-01-01	0.67361
2003-04-01	0.56414
2003-07-01	0.54450
2003-10-01	0.49642
2004-01-01	0.52471
2004-04-01	0.57245
2004-07-01	0.56672
2004-10-01	0.60616
2005-01-01	0.52506
2005-04-01	0.70150
2005-07-01	0.49082
2005-10-01	0.29493
2006-01-01	0.54468
2006-04-01	0.36868
2006-07-01	0.31713
2006-10-01	0.26340
2007-01-01	0.06500
2007-04-01	0.20258
2007-07-01	0.21269
2007-10-01	0.22081
2008-01-01	0.23718
2008-07-01	0.69370
2008-10-01	0.20875
2009-01-01	0.19962
2009-04-01	0.21201
2010-10-01	1.33620
2011-01-01	1.42070
2011-04-01	1.80662
2011-07-01	1.68788
2011-10-01	0.32348
2012-01-01	0.33390
2013-01-01	0.20000
2013-04-01	0.20000
2013-07-01	0.20000
2013-10-01	0.20000
2015-01-01	0.02220
2015-04-01	1.85218