Quarter	Billions of US Dollars
1993-07-01	0.0458
1993-10-01	0.3693
1994-01-01	0.3803
1994-04-01	0.3828
1994-07-01	0.3439
1994-10-01	0.0338
1995-01-01	0.5152
1995-04-01	0.6095
1995-07-01	0.9063
1995-10-01	1.0654
1996-01-01	0.8981
1996-04-01	1.2726
1996-07-01	0.8781
1996-10-01	1.4354
1997-01-01	1.5095
1997-04-01	1.6355
1997-07-01	1.8410
1997-10-01	2.0557
1998-01-01	1.9229
1998-04-01	1.7033
1998-07-01	2.8841
1998-10-01	3.2600
1999-01-01	2.6760
1999-04-01	2.7427
1999-07-01	3.2793
1999-10-01	3.9930
2000-01-01	2.8410
2000-04-01	3.1851
2000-07-01	4.1962
2000-10-01	4.5088
2001-01-01	4.7146
2001-04-01	6.3503
2001-07-01	6.8217
2001-10-01	5.3249
2002-01-01	5.3673
2002-04-01	6.3746
2002-07-01	3.8940
2002-10-01	5.0480
2003-01-01	4.9752
2003-04-01	5.1910
2003-07-01	5.1878
2003-10-01	7.8800
2004-01-01	7.5432
2004-04-01	6.1892
2004-07-01	5.8914
2004-10-01	5.8401
2005-01-01	4.7928
2005-04-01	4.9055
2005-07-01	6.7011
2005-10-01	7.4700
2006-01-01	13.9985
2006-04-01	18.4376
2006-07-01	17.2993
2006-10-01	18.2949
2007-01-01	12.3381
2007-04-01	9.9750
2007-07-01	10.5828
2007-10-01	9.6209
2008-01-01	8.7971
2008-04-01	11.0340
2008-07-01	11.5796
2008-10-01	13.3979
2009-01-01	9.4372
2009-04-01	9.0644
2009-07-01	8.9238
2009-10-01	9.7061
2010-01-01	11.3360
2010-04-01	12.1217
2010-07-01	12.9457
2010-10-01	11.1436
2011-01-01	10.7895
2011-04-01	8.9734
2011-07-01	7.8251
2011-10-01	8.0893
2012-01-01	8.3990
2012-04-01	8.7934
2012-07-01	9.5090
2012-10-01	12.4108
2013-01-01	14.2890
2013-04-01	14.1608
2013-07-01	14.7307
2013-10-01	14.4735
2014-01-01	13.9745
2014-04-01	15.8640
2014-07-01	15.8118
2014-10-01	13.3309
2015-01-01	15.9619
2015-04-01	14.2335