Quarter	Billions of US Dollars
1993-07-01	0.30027
1993-10-01	0.33098
1994-01-01	0.33536
1994-04-01	0.27853
1994-07-01	0.33212
1994-10-01	0.33087
1995-01-01	0.35819
1995-04-01	0.36063
1995-07-01	0.35190
1995-10-01	0.34900
1996-01-01	0.34450
1996-04-01	0.33956
1996-07-01	0.33863
1996-10-01	0.33324
1997-01-01	0.32422
1997-04-01	0.32535
1997-07-01	0.32276
1997-10-01	0.31940
1998-01-01	0.31602
1998-04-01	0.31471
1998-07-01	0.36761
1998-10-01	0.39831
1999-01-01	0.37987
1999-04-01	0.53006
1999-07-01	0.49651
1999-10-01	0.51214
2000-01-01	0.58235
2000-04-01	0.55252
2000-07-01	0.60750
2000-10-01	0.59431
2001-01-01	0.64890
2001-04-01	0.54825
2001-07-01	0.58329
2001-10-01	0.62044
2002-01-01	0.61765
2002-04-01	0.74658
2002-07-01	0.73634
2002-10-01	0.76137
2003-01-01	0.76283
2003-04-01	0.90692
2003-07-01	0.90940
2003-10-01	0.95426
2004-01-01	1.11780
2004-04-01	1.12172
2004-07-01	1.15104
2004-10-01	1.25339
2005-01-01	1.20322
2005-04-01	1.13905
2005-07-01	1.13551
2005-10-01	1.11381
2006-01-01	1.20696
2006-04-01	1.21134
2006-07-01	1.49278
2006-10-01	1.61157
2007-01-01	1.62393
2007-04-01	1.92778
2007-07-01	1.99363
2007-10-01	2.11960
2008-01-01	2.44134
2008-04-01	2.20648
2008-07-01	2.21627
2008-10-01	2.18567
2009-01-01	2.06240
2009-04-01	2.13681
2009-07-01	2.12636
2009-10-01	2.12270
2010-01-01	1.97792
2010-04-01	1.88292
2010-07-01	2.01012
2010-10-01	2.05646
2011-01-01	1.96645
2011-04-01	2.97699
2011-07-01	2.85683
2011-10-01	2.73194
2012-01-01	2.78552
2012-04-01	2.66077
2012-07-01	2.70631
2012-10-01	2.69360
2013-01-01	2.58867
2013-04-01	2.62287
2013-07-01	2.68410
2013-10-01	2.74364
2014-01-01	2.74910
2014-04-01	2.68970
2014-07-01	2.51918
2014-10-01	2.38671
2015-01-01	2.23703
2015-04-01	1.46446