Quarter	Billions of US Dollars
1993-07-01	0.28274
1993-10-01	0.33289
1994-01-01	0.32865
1994-04-01	0.41334
1994-07-01	0.64514
1994-10-01	0.66614
1995-01-01	0.67401
1995-04-01	0.44086
1995-07-01	0.51899
1995-10-01	0.61023
1996-01-01	0.63229
1996-04-01	0.47999
1996-07-01	0.63509
1996-10-01	0.89787
1997-01-01	0.65197
1997-04-01	0.87448
1997-07-01	0.61123
1997-10-01	0.51146
1998-01-01	0.59045
1998-04-01	0.27633
1998-07-01	0.41773
1998-10-01	0.35052
1999-01-01	0.32900
1999-04-01	0.20851
1999-07-01	0.32806
1999-10-01	0.23188
2000-01-01	0.35903
2000-04-01	0.41353
2000-07-01	0.21314
2000-10-01	0.13780
2001-01-01	0.17605
2001-04-01	0.12595
2001-07-01	0.16127
2001-10-01	0.23456
2002-01-01	0.17991
2002-04-01	0.13701
2002-07-01	0.32631
2002-10-01	0.43468
2003-01-01	0.39433
2003-04-01	0.34700
2003-07-01	0.18697
2003-10-01	0.27386
2004-01-01	0.43319
2004-04-01	0.37851
2004-07-01	0.39752
2004-10-01	0.37314
2005-01-01	0.91428
2005-04-01	0.48230
2005-07-01	1.03825
2005-10-01	0.47460
2006-01-01	2.09545
2006-04-01	1.20303
2006-07-01	3.13662
2006-10-01	3.24260
2007-01-01	4.20351
2007-04-01	1.44315
2007-07-01	0.88320
2007-10-01	1.46070
2008-01-01	2.09988
2008-04-01	2.97459
2008-07-01	3.35473
2008-10-01	1.24013
2009-01-01	2.05716
2009-04-01	1.97777
2009-07-01	2.51205
2009-10-01	1.97830
2010-01-01	2.52532
2010-04-01	2.43193
2010-07-01	2.07388
2010-10-01	1.86002
2011-01-01	1.92863
2011-04-01	1.91196
2011-07-01	2.09721
2011-10-01	2.00703
2012-01-01	2.02789
2012-04-01	1.90725
2012-07-01	1.80001
2012-10-01	1.92074
2013-01-01	1.67343
2013-04-01	2.05762
2013-07-01	2.48524
2013-10-01	2.00323
2014-01-01	1.76454
2014-04-01	1.59023
2014-07-01	2.04914
2014-10-01	1.77775
2015-01-01	2.03064
2015-04-01	1.98260