Quarter	Billions of US Dollars
1993-07-01	13.7785
1993-10-01	12.6178
1994-01-01	12.7839
1994-04-01	10.9642
1994-07-01	11.1610
1994-10-01	12.6092
1995-01-01	12.8056
1995-04-01	12.0317
1995-07-01	9.7149
1995-10-01	9.4399
1996-01-01	8.3074
1996-04-01	9.5082
1996-07-01	9.4384
1996-10-01	10.8680
1997-01-01	9.2774
1997-04-01	8.6063
1997-07-01	8.1651
1997-10-01	8.1075
1998-01-01	6.1382
1998-04-01	6.5884
1998-07-01	7.0613
1998-10-01	6.1327
1999-01-01	6.3556
1999-04-01	5.5256
1999-07-01	5.1201
1999-10-01	5.6234
2000-01-01	9.7856
2000-04-01	12.5036
2000-07-01	6.7020
2000-10-01	5.1182
2001-01-01	7.4849
2001-04-01	5.9722
2001-07-01	8.8513
2001-10-01	11.7495
2002-01-01	10.8616
2002-04-01	11.0679
2002-07-01	10.9111
2002-10-01	9.5989
2003-01-01	13.9297
2003-04-01	16.8828
2003-07-01	12.5868
2003-10-01	6.0524
2004-01-01	8.9240
2004-04-01	8.4299
2004-07-01	7.5471
2004-10-01	3.7207
2005-01-01	6.4687
2005-04-01	10.1092
2005-07-01	4.0541
2005-10-01	3.2766
2006-01-01	8.8755
2006-04-01	15.3333
2006-07-01	6.2613
2006-10-01	2.1575
2007-01-01	9.2515
2007-04-01	29.2213
2007-07-01	40.5682
2007-10-01	8.1031
2008-01-01	22.5044
2008-04-01	31.8239
2008-07-01	44.6906
2008-10-01	68.3689
2009-01-01	65.9905
2009-04-01	63.0969
2009-07-01	57.5494
2009-10-01	32.7069
2010-01-01	36.0339
2010-04-01	26.9068
2010-07-01	40.9332
2010-10-01	28.8494
2011-01-01	30.2748
2011-04-01	25.6738
2011-07-01	30.2623
2011-10-01	31.9518
2012-01-01	30.7335
2012-04-01	25.6952
2012-07-01	25.2572
2012-10-01	48.1546
2013-01-01	41.8701
2013-04-01	26.6842
2013-07-01	38.6850
2013-10-01	24.4927
2014-01-01	19.0302
2014-04-01	35.0905
2014-07-01	33.2042
2014-10-01	29.1883
2015-01-01	24.0977
2015-04-01	18.6177