Quarter	Billions of US Dollars
1993-07-01	0.1500
1993-10-01	0.0900
1994-01-01	0.1500
1994-04-01	0.1500
1994-07-01	0.1500
1994-10-01	0.1500
1995-01-01	0.1500
1995-04-01	0.1500
1995-07-01	0.1500
1997-01-01	0.0750
1997-04-01	0.0042
1997-07-01	0.0200
1997-10-01	0.1114
1998-01-01	0.1055
1998-04-01	0.0744
1998-07-01	0.2074
1998-10-01	0.1964
1999-01-01	0.1473
1999-04-01	0.3463
1999-07-01	0.1732
1999-10-01	0.2659
2000-01-01	0.1712
2000-04-01	0.1016
2000-07-01	0.2335
2000-10-01	0.0931
2001-01-01	0.1634
2001-04-01	0.2224
2001-07-01	0.3151
2001-10-01	0.3444
2002-01-01	0.2252
2002-04-01	0.6958
2002-07-01	0.3662
2002-10-01	0.4070
2003-01-01	0.2762
2003-04-01	0.6783
2003-07-01	0.5040
2003-10-01	0.3898
2004-01-01	0.4251
2004-04-01	0.4127
2004-07-01	1.2175
2004-10-01	1.8371
2005-01-01	4.2001
2005-04-01	2.2996
2005-07-01	2.7458
2005-10-01	1.1969
2006-01-01	2.5426
2006-04-01	2.7239
2006-07-01	2.8348
2006-10-01	1.8437
2007-01-01	2.3578
2007-04-01	3.7700
2007-07-01	1.8656
2007-10-01	1.1502
2008-01-01	1.6902
2008-04-01	2.4678
2008-07-01	2.8030
2008-10-01	1.4136
2009-01-01	1.4474
2009-04-01	1.5518
2009-07-01	1.7892
2009-10-01	1.6658
2010-01-01	2.0822
2010-04-01	1.6076
2010-07-01	2.1508
2010-10-01	2.0578
2011-01-01	2.9971
2011-04-01	4.6646
2011-07-01	7.7716
2011-10-01	8.0584
2012-01-01	9.3237
2012-04-01	6.8241
2012-07-01	5.8665
2012-10-01	3.8334
2013-01-01	6.7095
2013-04-01	10.4192
2013-07-01	14.6653
2013-10-01	16.1196
2014-01-01	16.6782
2014-04-01	14.9138
2014-07-01	15.2322
2014-10-01	13.1908
2015-01-01	8.0392
2015-04-01	13.0344