Quarter	Billions of US Dollars
1993-07-01	0.08829
1995-01-01	0.02346
1995-04-01	0.11494
1995-07-01	0.11653
1995-10-01	0.11811
1996-01-01	0.09561
1996-04-01	0.13034
1996-07-01	0.13103
1996-10-01	0.13067
1997-01-01	0.11925
1999-07-01	0.02500
1999-10-01	0.02500
2000-01-01	0.04411
2000-04-01	0.04411
2000-07-01	0.02753
2000-10-01	0.34111
2001-07-01	0.09131
2001-10-01	0.08814
2002-01-01	0.21174
2002-04-01	0.27049
2002-07-01	0.21602
2002-10-01	0.28832
2003-01-01	0.23437
2003-04-01	0.21863
2003-07-01	0.58679
2003-10-01	1.12322
2004-01-01	1.52654
2004-04-01	1.79418
2004-07-01	1.31218
2004-10-01	1.09041
2005-01-01	0.95290
2005-04-01	0.75600
2005-07-01	1.48022
2005-10-01	1.29001
2006-01-01	1.51569
2006-04-01	1.50433
2006-07-01	0.47429
2006-10-01	0.66895
2007-01-01	0.40477
2007-04-01	0.77940
2007-07-01	1.09736
2007-10-01	0.80892
2008-01-01	0.89656
2008-04-01	0.65782
2008-07-01	0.38869
2008-10-01	0.35702
2009-01-01	0.37721
2009-04-01	0.32869
2009-07-01	0.37000
2009-10-01	0.52991
2010-01-01	0.41662
2010-04-01	0.49909
2010-07-01	0.44993
2010-10-01	0.29024
2011-01-01	0.19949
2011-04-01	0.05129
2011-07-01	0.17940
2011-10-01	0.20462
2012-01-01	0.09792
2012-04-01	0.48338
2012-07-01	0.49282
2012-10-01	0.47559
2013-01-01	0.46391
2013-04-01	0.00392
2013-07-01	0.00405
2013-10-01	0.04255
2014-01-01	0.15429
2014-04-01	0.15344
2014-07-01	0.46897
2014-10-01	0.41166
2015-01-01	0.29600
2015-04-01	0.31456