Quarter	Billions of US Dollars
1993-07-01	9.6986
1993-10-01	6.4707
1994-01-01	10.0857
1994-04-01	6.7569
1994-07-01	7.9769
1994-10-01	8.0185
1995-01-01	10.1646
1995-04-01	8.5112
1995-07-01	6.3630
1995-10-01	5.0986
1996-01-01	5.7032
1996-04-01	8.4086
1996-07-01	8.6891
1996-10-01	7.6637
1997-01-01	6.1614
1997-04-01	5.2352
1997-07-01	4.4767
1997-10-01	5.3130
1998-01-01	4.0036
1998-04-01	4.3833
1998-07-01	3.4668
1998-10-01	3.0208
1999-01-01	4.4771
1999-04-01	4.2305
1999-07-01	3.8717
1999-10-01	3.8206
2000-01-01	8.4063
2000-04-01	10.6686
2000-07-01	5.2329
2000-10-01	4.3925
2001-01-01	6.6355
2001-04-01	4.9972
2001-07-01	7.4694
2001-10-01	9.1032
2002-01-01	8.6984
2002-04-01	8.2696
2002-07-01	7.8870
2002-10-01	6.2881
2003-01-01	12.4074
2003-04-01	9.9092
2003-07-01	5.9064
2003-10-01	3.1367
2004-01-01	6.5951
2004-04-01	4.5501
2004-07-01	5.0105
2004-10-01	2.8741
2005-01-01	5.4473
2005-04-01	7.6236
2005-07-01	3.0359
2005-10-01	2.5632
2006-01-01	8.6704
2006-04-01	10.7070
2006-07-01	3.6669
2006-10-01	1.4891
2007-01-01	8.6917
2007-04-01	23.3615
2007-07-01	30.8337
2007-10-01	7.3659
2008-01-01	21.7010
2008-04-01	25.6591
2008-07-01	38.5805
2008-10-01	54.1956
2009-01-01	43.3344
2009-04-01	37.0657
2009-07-01	38.8532
2009-10-01	17.5787
2010-01-01	31.7638
2010-04-01	16.0468
2010-07-01	29.8877
2010-10-01	21.9662
2011-01-01	22.7833
2011-04-01	17.9690
2011-07-01	21.3381
2011-10-01	24.0293
2012-01-01	26.1763
2012-04-01	21.6643
2012-07-01	16.7416
2012-10-01	40.3532
2013-01-01	36.7815
2013-04-01	17.9029
2013-07-01	35.5781
2013-10-01	14.3436
2014-01-01	12.1459
2014-04-01	28.6709
2014-07-01	26.8752
2014-10-01	20.3861
2015-01-01	12.7310
2015-04-01	9.9183