Quarter	Billions of US Dollars
1993-07-01	0.5440
1993-10-01	0.4840
1994-01-01	0.7440
1994-04-01	0.8442
1994-07-01	0.8964
1994-10-01	0.9477
1995-01-01	0.8751
1995-04-01	0.8764
1995-07-01	0.8750
1995-10-01	0.7253
1996-01-01	0.7057
1996-04-01	0.9556
1996-07-01	0.7236
1996-10-01	0.9666
1997-01-01	0.8450
1997-04-01	0.9324
1997-07-01	1.5127
1997-10-01	1.5007
1998-01-01	1.5032
1998-04-01	1.9968
1998-07-01	2.0757
1998-10-01	2.0779
1999-01-01	2.0775
1999-04-01	2.2727
1999-07-01	2.2722
1999-10-01	3.3575
2000-01-01	3.3532
2000-04-01	5.4459
2000-07-01	5.8518
2000-10-01	5.9047
2001-01-01	5.6403
2001-04-01	4.7863
2001-07-01	4.8242
2001-10-01	8.4689
2002-01-01	8.5417
2002-04-01	8.6126
2002-07-01	8.0977
2002-10-01	8.1434
2003-01-01	8.3492
2003-04-01	8.3413
2003-07-01	9.4888
2003-10-01	12.3599
2004-01-01	12.4306
2004-04-01	12.8297
2004-07-01	12.2064
2004-10-01	13.3241
2005-01-01	13.3051
2005-04-01	13.0359
2005-07-01	12.5047
2005-10-01	12.3086
2006-01-01	12.3084
2006-04-01	13.7228
2006-07-01	13.9927
2006-10-01	14.4296
2007-01-01	14.2905
2007-04-01	15.2154
2007-07-01	15.4268
2007-10-01	16.6132
2008-01-01	17.3931
2008-04-01	17.4243
2008-07-01	17.6356
2008-10-01	16.8345
2009-01-01	16.6660
2009-04-01	16.9962
2009-07-01	18.4701
2009-10-01	18.5745
2010-01-01	19.0360
2010-04-01	19.4303
2010-07-01	20.5901
2010-10-01	21.4819
2011-01-01	21.8276
2011-04-01	22.0331
2011-07-01	21.6986
2011-10-01	19.7219
2012-01-01	20.7300
2012-04-01	19.4309
2012-07-01	21.0700
2012-10-01	21.0605
2013-01-01	22.3994
2013-04-01	21.9995
2013-07-01	23.0774
2013-10-01	22.0775
2014-01-01	22.7656
2014-04-01	22.9720
2014-07-01	23.8750
2014-10-01	22.6741
2015-01-01	22.3230
2015-04-01	24.2542