Quarter	Billions of US Dollars
1993-07-01	3.3766
1993-10-01	4.2850
1994-01-01	3.8008
1994-04-01	5.3871
1994-07-01	5.4112
1994-10-01	5.3040
1995-01-01	5.0103
1995-04-01	5.3829
1995-07-01	6.3257
1995-10-01	10.0913
1996-01-01	9.6674
1996-04-01	8.1736
1996-07-01	6.1336
1996-10-01	5.7256
1997-01-01	5.4888
1997-04-01	5.0147
1997-07-01	5.6507
1997-10-01	7.5861
1998-01-01	8.0061
1998-04-01	6.6648
1998-07-01	7.5243
1998-10-01	7.1473
1999-01-01	10.2773
1999-04-01	8.2017
1999-07-01	11.5967
1999-10-01	9.1237
2000-01-01	10.2801
2000-04-01	14.1542
2000-07-01	13.0807
2000-10-01	11.9395
2001-01-01	14.1531
2001-04-01	10.5765
2001-07-01	11.7868
2001-10-01	14.3560
2002-01-01	14.3176
2002-04-01	16.3419
2002-07-01	14.7924
2002-10-01	10.9447
2003-01-01	8.5236
2003-04-01	8.4253
2003-07-01	8.0423
2003-10-01	12.7697
2004-01-01	17.3685
2004-04-01	14.7867
2004-07-01	16.3597
2004-10-01	14.8248
2005-01-01	14.3736
2005-04-01	13.0203
2005-07-01	13.9879
2005-10-01	13.2189
2006-01-01	13.6809
2006-04-01	23.2266
2006-07-01	15.3506
2006-10-01	20.6176
2007-01-01	27.5311
2007-04-01	30.1161
2007-07-01	36.3462
2007-10-01	45.8251
2008-01-01	53.1021
2008-04-01	61.7422
2008-07-01	58.2655
2008-10-01	34.4971
2009-01-01	43.1989
2009-04-01	46.2406
2009-07-01	43.6950
2009-10-01	31.9228
2010-01-01	36.1634
2010-04-01	30.2531
2010-07-01	49.8460
2010-10-01	34.4708
2011-01-01	37.6833
2011-04-01	32.9823
2011-07-01	21.1069
2011-10-01	14.7945
2012-01-01	20.8215
2012-04-01	12.7896
2012-07-01	12.4593
2012-10-01	15.4939
2013-01-01	14.6347
2013-04-01	10.8817
2013-07-01	11.2154
2013-10-01	7.0261
2014-01-01	10.2741
2014-04-01	8.2599
2014-07-01	8.1693
2014-10-01	4.1658
2015-01-01	4.4478
2015-04-01	4.7422