Quarter	Billions of US Dollars
1993-07-01	10.2212
1993-10-01	9.5030
1994-01-01	9.9241
1994-04-01	9.8998
1994-07-01	10.7314
1994-10-01	11.1545
1995-01-01	11.2090
1995-04-01	13.6597
1995-07-01	12.8718
1995-10-01	11.7782
1996-01-01	10.6244
1996-04-01	12.7188
1996-07-01	12.6829
1996-10-01	16.6905
1997-01-01	14.7676
1997-04-01	13.9687
1997-07-01	15.9744
1997-10-01	14.5241
1998-01-01	12.0099
1998-04-01	9.2853
1998-07-01	10.1840
1998-10-01	9.7324
1999-01-01	8.2391
1999-04-01	8.4700
1999-07-01	6.9405
1999-10-01	6.1924
2000-01-01	6.4492
2000-04-01	7.2793
2000-07-01	6.8840
2000-10-01	7.9571
2001-01-01	7.7829
2001-04-01	7.6203
2001-07-01	7.4471
2001-10-01	7.5326
2002-01-01	5.7837
2002-04-01	8.8690
2002-07-01	7.8167
2002-10-01	7.5299
2003-01-01	8.2653
2003-04-01	9.3625
2003-07-01	8.4542
2003-10-01	10.2839
2004-01-01	12.6186
2004-04-01	13.4943
2004-07-01	12.1345
2004-10-01	10.5451
2005-01-01	12.5899
2005-04-01	13.7009
2005-07-01	14.4686
2005-10-01	10.4421
2006-01-01	12.1497
2006-04-01	10.4413
2006-07-01	11.8856
2006-10-01	11.0706
2007-01-01	13.3924
2007-04-01	15.8197
2007-07-01	9.2892
2007-10-01	12.3251
2008-01-01	14.4733
2008-04-01	15.6764
2008-07-01	11.2310
2008-10-01	11.1226
2009-01-01	12.9087
2009-04-01	14.0983
2009-07-01	16.2861
2009-10-01	14.5011
2010-01-01	15.2561
2010-04-01	10.9332
2010-07-01	15.7197
2010-10-01	16.0625
2011-01-01	18.5708
2011-04-01	17.8136
2011-07-01	24.3754
2011-10-01	24.5150
2012-01-01	40.2920
2012-04-01	42.6054
2012-07-01	41.4741
2012-10-01	39.5331
2013-01-01	40.1168
2013-04-01	39.7850
2013-07-01	41.5849
2013-10-01	44.4907
2014-01-01	40.2500
2014-04-01	45.2650
2014-07-01	48.9792
2014-10-01	45.9330
2015-01-01	39.3299
2015-04-01	38.4374