Quarter	Billions of US Dollars
1993-07-01	7.3163
1993-10-01	6.0238
1994-01-01	5.3106
1994-04-01	4.5778
1994-07-01	4.6109
1994-10-01	5.2394
1995-01-01	5.1422
1995-04-01	6.2490
1995-07-01	5.7432
1995-10-01	5.3784
1996-01-01	6.0251
1996-04-01	6.0181
1996-07-01	4.1074
1996-10-01	5.6519
1997-01-01	5.9753
1997-04-01	6.0003
1997-07-01	6.9613
1997-10-01	6.1603
1998-01-01	7.0388
1998-04-01	6.9040
1998-07-01	8.0759
1998-10-01	10.0482
1999-01-01	10.4098
1999-04-01	11.7302
1999-07-01	13.0902
1999-10-01	10.7557
2000-01-01	10.8205
2000-04-01	11.2354
2000-07-01	11.5556
2000-10-01	16.1094
2001-01-01	26.5343
2001-04-01	25.3612
2001-07-01	27.0386
2001-10-01	22.9525
2002-01-01	18.0301
2002-04-01	21.3748
2002-07-01	27.8836
2002-10-01	32.4082
2003-01-01	38.1130
2003-04-01	41.4527
2003-07-01	38.4553
2003-10-01	39.0206
2004-01-01	30.7056
2004-04-01	33.2777
2004-07-01	31.6218
2004-10-01	35.9149
2005-01-01	25.9444
2005-04-01	23.1280
2005-07-01	25.9568
2005-10-01	26.4276
2006-01-01	29.2495
2006-04-01	32.2940
2006-07-01	31.4827
2006-10-01	30.6992
2007-01-01	34.7122
2007-04-01	34.5078
2007-07-01	35.6228
2007-10-01	39.3566
2008-01-01	49.0713
2008-04-01	46.8057
2008-07-01	39.6988
2008-10-01	35.3017
2009-01-01	24.9172
2009-04-01	34.1988
2009-07-01	37.0564
2009-10-01	39.6243
2010-01-01	40.7492
2010-04-01	39.6090
2010-07-01	41.5667
2010-10-01	36.7826
2011-01-01	45.6486
2011-04-01	45.1952
2011-07-01	38.7805
2011-10-01	38.4241
2012-01-01	38.6822
2012-04-01	46.8602
2012-07-01	53.8158
2012-10-01	55.8141
2013-01-01	57.8932
2013-04-01	55.4361
2013-07-01	64.5256
2013-10-01	70.3682
2014-01-01	70.8319
2014-04-01	71.1427
2014-07-01	58.0173
2014-10-01	48.1828
2015-01-01	41.7250
2015-04-01	35.8369