Quarter	Billions of US Dollars
1993-04-01	0.0710
1993-07-01	1.5418
1993-10-01	1.7800
1994-01-01	2.3645
1994-04-01	2.8733
1994-07-01	3.7696
1994-10-01	3.5128
1995-01-01	5.0566
1995-04-01	5.3645
1995-07-01	5.5064
1995-10-01	6.8093
1996-01-01	6.6504
1996-04-01	6.6964
1996-07-01	6.6932
1996-10-01	7.2621
1997-01-01	7.0451
1997-04-01	7.6856
1997-07-01	7.3791
1997-10-01	7.4922
1998-01-01	6.8773
1998-04-01	6.4036
1998-07-01	6.3552
1998-10-01	6.7882
1999-01-01	6.2112
1999-04-01	5.1768
1999-07-01	4.5112
1999-10-01	3.9968
2000-01-01	4.5459
2000-04-01	3.9924
2000-07-01	4.7278
2000-10-01	4.6465
2001-01-01	5.8470
2001-04-01	6.0682
2001-07-01	7.9730
2001-10-01	8.3932
2002-01-01	8.3206
2002-04-01	9.4810
2002-07-01	10.6538
2002-10-01	13.0169
2003-01-01	15.2074
2003-04-01	15.1915
2003-07-01	15.4424
2003-10-01	18.2469
2004-01-01	15.7610
2004-04-01	13.2187
2004-07-01	13.1898
2004-10-01	11.8034
2005-01-01	11.4876
2005-04-01	12.7640
2005-07-01	13.1600
2005-10-01	11.9646
2006-01-01	12.1785
2006-04-01	14.0866
2006-07-01	14.4961
2006-10-01	15.4414
2007-01-01	16.0484
2007-04-01	17.1119
2007-07-01	18.8858
2007-10-01	19.5971
2008-01-01	21.1203
2008-04-01	20.1816
2008-07-01	21.0027
2008-10-01	18.6202
2009-01-01	17.1747
2009-04-01	13.8544
2009-07-01	15.9422
2009-10-01	14.6180
2010-01-01	13.1478
2010-04-01	12.8516
2010-07-01	12.2276
2010-10-01	11.1623
2011-01-01	9.7512
2011-04-01	12.1301
2011-07-01	9.1074
2011-10-01	9.9301
2012-01-01	13.5969
2012-04-01	9.4582
2012-07-01	8.3199
2012-10-01	7.3619
2013-01-01	5.5583
2013-04-01	5.6460
2013-07-01	5.2612
2013-10-01	4.4961
2014-01-01	3.4573
2014-04-01	3.0484
2014-07-01	2.2806
2014-10-01	1.8035
2015-01-01	1.6075
2015-04-01	2.4469