Quarter	Billions of US Dollars
1993-07-01	0.4804
1993-10-01	0.2661
1994-01-01	0.3842
1994-04-01	0.4940
1994-07-01	0.6930
1994-10-01	0.6780
1995-01-01	0.5800
1995-04-01	0.7550
1995-07-01	0.3360
1995-10-01	0.2300
1996-01-01	0.7780
1996-04-01	0.6993
1996-07-01	0.6510
1996-10-01	0.9790
1997-01-01	0.6031
1997-04-01	0.5230
1997-07-01	0.7600
1997-10-01	0.6250
1998-01-01	0.3611
1998-04-01	0.5800
1998-07-01	0.6860
1998-10-01	0.3550
1999-01-01	1.3241
1999-04-01	1.0366
1999-07-01	1.9298
1999-10-01	1.4974
2000-01-01	5.5270
2000-04-01	4.8633
2000-07-01	5.3213
2000-10-01	2.8472
2001-01-01	5.6942
2001-04-01	4.9811
2001-07-01	3.5948
2001-10-01	1.7516
2002-01-01	3.2050
2002-04-01	3.9004
2002-07-01	3.1394
2002-10-01	1.5877
2003-01-01	4.6410
2003-04-01	3.1334
2003-07-01	1.6189
2003-10-01	1.8365
2004-01-01	5.0333
2004-04-01	4.1341
2004-07-01	5.3543
2004-10-01	3.7894
2005-01-01	7.9897
2005-04-01	6.5211
2005-07-01	7.6458
2005-10-01	4.9886
2006-01-01	12.3138
2006-04-01	8.6377
2006-07-01	8.7001
2006-10-01	6.1232
2007-01-01	16.8838
2007-04-01	18.0691
2007-07-01	22.3705
2007-10-01	11.4332
2008-01-01	20.4192
2008-04-01	12.3894
2008-07-01	14.8503
2008-10-01	17.3075
2009-01-01	14.5994
2009-04-01	5.3223
2009-07-01	7.6052
2009-10-01	5.4214
2010-01-01	13.0714
2010-04-01	6.4411
2010-07-01	10.0904
2010-10-01	7.1026
2011-01-01	18.9422
2011-04-01	12.1257
2011-07-01	15.0495
2011-10-01	9.3051
2012-01-01	11.8207
2012-04-01	9.6171
2012-07-01	6.8108
2012-10-01	10.1759
2013-01-01	9.8390
2013-04-01	5.8044
2013-07-01	11.0660
2013-10-01	9.5274
2014-01-01	10.5609
2014-04-01	10.8904
2014-07-01	8.4060
2014-10-01	9.1065
2015-01-01	6.9213
2015-04-01	4.4563