Quarter	Billions of US Dollars
1993-07-01	0.38710
1993-10-01	0.29450
1994-01-01	0.31400
1994-04-01	0.15800
1994-07-01	0.04700
1994-10-01	0.04650
1995-01-01	0.03150
1995-04-01	0.02250
1995-07-01	0.02250
1995-10-01	0.01250
1996-01-01	0.01250
1996-04-01	0.01750
1996-07-01	0.00500
1996-10-01	0.00250
1997-01-01	0.02250
1997-04-01	0.02250
1997-07-01	0.08750
1997-10-01	0.08250
1998-01-01	0.07750
1998-04-01	0.08250
1998-07-01	0.00750
1998-10-01	0.00750
1999-01-01	0.00500
1999-04-01	0.01500
1999-07-01	0.01500
1999-10-01	0.01500
2000-01-01	0.01500
2000-04-01	0.02000
2000-07-01	0.07500
2000-10-01	0.07500
2001-01-01	0.07500
2001-04-01	0.13712
2001-07-01	0.23200
2001-10-01	0.39000
2002-01-01	0.37500
2002-04-01	0.38795
2002-07-01	0.27965
2002-10-01	0.15191
2003-01-01	0.23171
2003-04-01	0.11000
2003-07-01	0.64907
2003-10-01	0.66051
2004-01-01	0.69470
2004-04-01	0.64685
2004-07-01	0.02500
2004-10-01	0.01350
2005-01-01	0.09239
2005-04-01	0.29162
2005-07-01	0.27434
2005-10-01	0.30313
2006-01-01	0.26208
2006-04-01	0.40003
2006-07-01	0.45740
2006-10-01	0.45849
2007-01-01	0.46803
2007-04-01	0.11356
2007-07-01	0.13489
2007-10-01	0.18734
2008-01-01	0.26272
2008-04-01	0.43665
2008-07-01	0.41678
2008-10-01	0.41884
2009-01-01	0.37811
2009-04-01	0.14595
2009-07-01	0.11011
2009-10-01	0.50101
2010-01-01	1.17982
2010-04-01	1.16083
2010-07-01	1.47512
2010-10-01	1.13632
2011-01-01	1.03419
2011-04-01	1.07421
2011-07-01	0.93136
2011-10-01	0.86060
2012-01-01	0.24466
2012-04-01	0.39534
2012-07-01	0.26226
2012-10-01	0.38156
2013-01-01	0.39595
2013-04-01	0.20913
2013-07-01	0.14544
2013-10-01	0.33732
2014-01-01	0.41947
2014-04-01	0.41795
2014-07-01	0.73608
2014-10-01	0.92776
2015-01-01	0.82776
2015-04-01	0.82776