Quarter	Billions of US Dollars
1993-07-01	0.90657
1993-10-01	0.82252
1994-01-01	0.69716
1994-04-01	0.46744
1994-07-01	0.49023
1994-10-01	0.57417
1995-01-01	0.29507
1995-04-01	0.27225
1995-07-01	0.32014
1995-10-01	0.52129
1996-01-01	0.68012
1996-04-01	0.63030
1996-07-01	0.17732
1996-10-01	1.24413
1997-01-01	1.42058
1997-04-01	1.41961
1997-07-01	1.03921
1997-10-01	1.70240
1998-01-01	1.45537
1998-04-01	1.28989
1998-07-01	1.16342
1998-10-01	1.06767
1999-01-01	1.11182
1999-04-01	0.72389
1999-07-01	0.88244
1999-10-01	1.17242
2000-01-01	1.06332
2000-04-01	0.98118
2000-07-01	0.31439
2000-10-01	1.38399
2001-01-01	2.17491
2001-04-01	2.44248
2001-07-01	2.26626
2001-10-01	1.82662
2002-01-01	1.65366
2002-04-01	1.24719
2002-07-01	1.78531
2002-10-01	1.16808
2003-01-01	1.90725
2003-04-01	1.38440
2003-07-01	1.20170
2003-10-01	0.81960
2004-01-01	1.47351
2004-04-01	2.15364
2004-07-01	2.52811
2004-10-01	3.51641
2005-01-01	2.62944
2005-04-01	2.07294
2005-07-01	2.12765
2005-10-01	1.17456
2006-01-01	0.97642
2006-04-01	0.62285
2006-07-01	0.58677
2006-10-01	0.60618
2007-01-01	0.69715
2007-04-01	0.55048
2007-07-01	0.34693
2007-10-01	0.55068
2008-01-01	0.49770
2008-04-01	0.64540
2008-07-01	0.56990
2008-10-01	0.15155
2009-01-01	0.15985
2009-04-01	0.06458
2009-07-01	0.07322
2009-10-01	0.08355
2010-01-01	0.28144
2010-04-01	0.28608
2010-07-01	0.26320
2010-10-01	0.85262
2011-01-01	1.28996
2011-04-01	1.08766
2011-07-01	1.25091
2011-10-01	0.61368
2012-01-01	0.85713
2012-04-01	0.65643
2012-07-01	0.54658
2012-10-01	1.40141
2013-01-01	1.83704
2013-04-01	1.74256
2013-07-01	1.98428
2013-10-01	1.54060
2014-01-01	0.90554
2014-04-01	0.87657
2014-07-01	0.75494
2014-10-01	0.41718
2015-01-01	0.47307
2015-04-01	0.41882