Quarter	Billions of US Dollars
1994-04-01	0.4940
1994-07-01	0.6591
1994-10-01	1.1979
1995-01-01	1.2875
1995-04-01	1.4136
1995-07-01	1.6863
1995-10-01	1.7990
1996-01-01	2.2536
1996-04-01	1.8215
1996-07-01	1.5831
1996-10-01	1.3686
1997-01-01	0.8392
1997-04-01	0.9427
1997-07-01	1.9847
1997-10-01	4.4246
1998-01-01	3.9820
1998-04-01	4.9458
1998-07-01	4.5427
1998-10-01	2.2156
1999-01-01	3.7712
1999-04-01	2.6541
1999-07-01	2.7917
1999-10-01	3.7790
2000-01-01	2.9052
2000-04-01	4.1341
2000-07-01	3.6107
2000-10-01	5.1772
2001-01-01	4.8291
2001-04-01	6.5640
2001-07-01	6.7395
2001-10-01	7.6019
2002-01-01	7.4450
2002-04-01	8.4547
2002-07-01	9.0505
2002-10-01	7.5073
2003-01-01	9.7913
2003-04-01	6.6646
2003-07-01	7.4369
2003-10-01	7.7958
2004-01-01	7.6117
2004-04-01	7.6826
2004-07-01	10.7233
2004-10-01	11.8525
2005-01-01	8.4506
2005-04-01	9.3141
2005-07-01	6.4567
2005-10-01	7.1088
2006-01-01	6.9214
2006-04-01	8.5261
2006-07-01	8.3774
2006-10-01	6.4258
2007-01-01	10.0243
2007-04-01	7.6332
2007-07-01	6.6949
2007-10-01	7.3083
2008-01-01	7.4861
2008-04-01	9.2160
2008-07-01	11.2799
2008-10-01	10.7421
2009-01-01	9.4852
2009-04-01	8.6882
2009-07-01	9.4340
2009-10-01	10.3835
2010-01-01	11.0386
2010-04-01	10.6570
2010-07-01	8.8165
2010-10-01	9.9801
2011-01-01	8.4012
2011-04-01	8.6912
2011-07-01	11.5912
2011-10-01	11.3338
2012-01-01	20.3495
2012-04-01	18.5215
2012-07-01	15.5380
2012-10-01	12.2280
2013-01-01	23.5116
2013-04-01	28.1727
2013-07-01	31.9395
2013-10-01	34.4939
2014-01-01	20.1796
2014-04-01	18.4803
2014-07-01	16.6027
2014-10-01	20.2381
2015-01-01	18.2363
2015-04-01	17.8091