Quarter	Billions of US Dollars
1993-07-01	0.14690
1993-10-01	0.14351
1994-01-01	0.34879
1994-04-01	0.36315
1994-07-01	0.73765
1994-10-01	0.73683
1995-01-01	0.46408
1995-04-01	0.46406
1995-07-01	1.03787
1995-10-01	1.06116
1996-01-01	0.99843
1996-04-01	1.01769
1996-10-01	0.02500
1997-01-01	0.09391
1997-04-01	0.12855
1997-07-01	0.12887
1997-10-01	0.06871
1998-01-01	0.04722
1998-04-01	0.04722
1999-07-01	0.20000
1999-10-01	0.20000
2000-01-01	0.20000
2000-04-01	0.20000
2003-10-01	0.17500
2004-01-01	0.17500
2004-04-01	0.20500
2004-07-01	0.20500
2004-10-01	0.23000
2005-01-01	0.23000
2005-04-01	0.32500
2005-07-01	0.45000
2005-10-01	1.25000
2006-01-01	1.37500
2006-04-01	2.15000
2006-07-01	2.50797
2006-10-01	1.62439
2007-01-01	1.76860
2007-04-01	1.06354
2007-07-01	0.96841
2007-10-01	1.13766
2008-01-01	0.73491
2008-04-01	1.19025
2008-07-01	2.16176
2008-10-01	2.81653
2009-01-01	5.60221
2009-04-01	7.24561
2009-07-01	6.86390
2009-10-01	6.10871
2010-01-01	3.68199
2010-04-01	2.48264
2010-07-01	3.66804
2010-10-01	4.94129
2011-01-01	5.12139
2011-04-01	4.83266
2011-07-01	3.09578
2011-10-01	1.97456
2012-01-01	1.74857
2012-04-01	1.88181
2012-07-01	2.37412
2012-10-01	3.48805
2013-01-01	3.01825
2013-04-01	2.40996
2013-07-01	1.86664
2013-10-01	0.85868
2014-01-01	0.86249
2014-04-01	1.19557
2014-07-01	3.60773
2014-10-01	3.65323
2015-01-01	4.19911
2015-04-01	4.50837