Quarter	Billions of US Dollars
1993-07-01	4.1835
1993-10-01	3.5223
1994-01-01	3.8809
1994-04-01	3.4075
1994-07-01	3.6140
1994-10-01	3.9488
1995-01-01	3.4996
1995-04-01	3.7152
1995-07-01	4.5713
1995-10-01	3.7626
1996-01-01	4.0186
1996-04-01	3.2600
1996-07-01	2.2691
1996-10-01	2.8022
1997-01-01	3.1978
1997-04-01	3.4511
1997-07-01	2.9294
1997-10-01	3.7466
1998-01-01	3.4643
1998-04-01	3.0659
1998-07-01	3.2282
1998-10-01	3.3583
1999-01-01	3.0593
1999-04-01	3.0108
1999-07-01	3.7758
1999-10-01	4.0100
2000-01-01	3.3593
2000-04-01	2.7719
2000-07-01	2.2762
2000-10-01	1.8617
2001-01-01	1.8241
2001-04-01	1.8307
2001-07-01	1.6930
2001-10-01	1.3863
2002-01-01	1.1814
2002-04-01	1.2774
2002-07-01	1.7902
2002-10-01	1.9817
2003-01-01	2.0725
2003-04-01	1.9422
2003-07-01	2.7684
2003-10-01	2.3108
2004-01-01	3.4157
2004-04-01	3.6261
2004-07-01	2.6948
2004-10-01	3.9077
2005-01-01	4.7697
2005-04-01	4.1891
2005-07-01	4.4105
2005-10-01	4.4394
2006-01-01	7.6182
2006-04-01	7.1399
2006-07-01	6.7504
2006-10-01	7.4570
2007-01-01	9.6125
2007-04-01	9.8105
2007-07-01	10.5723
2007-10-01	9.1608
2008-01-01	8.8942
2008-04-01	11.6901
2008-07-01	10.7920
2008-10-01	14.3633
2009-01-01	15.0159
2009-04-01	14.7394
2009-07-01	17.0561
2009-10-01	18.1052
2010-01-01	14.6708
2010-04-01	16.0310
2010-07-01	15.8933
2010-10-01	17.1392
2011-01-01	19.1526
2011-04-01	19.7028
2011-07-01	18.5114
2011-10-01	16.8555
2012-01-01	19.2399
2012-04-01	14.2468
2012-07-01	14.7802
2012-10-01	15.2648
2013-01-01	14.1142
2013-04-01	17.3973
2013-07-01	18.2500
2013-10-01	18.4460
2014-01-01	23.6523
2014-04-01	21.9510
2014-07-01	18.0850
2014-10-01	21.4987
2015-01-01	18.0698
2015-04-01	19.9757