Quarter	Billions of US Dollars
1993-07-01	0.27100
1993-10-01	0.26800
1994-01-01	0.25800
1994-04-01	0.25900
1994-07-01	0.24700
1994-10-01	0.25200
1995-01-01	0.25600
1995-04-01	0.21900
1995-07-01	0.22350
1995-10-01	0.22200
1996-01-01	0.21500
1996-04-01	0.20000
1996-07-01	0.31837
1996-10-01	0.35312
1997-01-01	0.39100
1997-04-01	0.38148
1997-07-01	0.26200
1997-10-01	0.24300
1998-01-01	0.57810
1998-04-01	0.57810
1998-07-01	0.81306
1998-10-01	0.84925
1999-01-01	0.92170
1999-04-01	1.13610
1999-07-01	1.21524
1999-10-01	1.37699
2000-01-01	1.43909
2000-04-01	2.05138
2000-07-01	2.04637
2000-10-01	2.00969
2001-01-01	1.89753
2001-04-01	2.04939
2001-07-01	2.54048
2001-10-01	2.49229
2002-01-01	2.48816
2002-04-01	2.29844
2002-07-01	2.30259
2002-10-01	2.43732
2003-01-01	2.44387
2003-04-01	1.86155
2003-07-01	1.40126
2003-10-01	1.39684
2004-01-01	1.41494
2004-04-01	1.41159
2004-07-01	1.41730
2004-10-01	1.31027
2005-01-01	1.28139
2005-04-01	1.66430
2005-07-01	1.66371
2005-10-01	1.85597
2006-01-01	1.70722
2006-04-01	1.70972
2006-07-01	1.70950
2006-10-01	2.42159
2007-01-01	2.42220
2007-04-01	2.42297
2007-07-01	2.42573
2007-10-01	2.42795
2008-01-01	2.43242
2008-04-01	2.02723
2008-07-01	2.02124
2008-10-01	1.78341
2009-01-01	1.60755
2009-04-01	1.93344
2009-07-01	1.93552
2009-10-01	2.21955
2010-01-01	2.28465
2010-04-01	2.27970
2010-07-01	2.28534
2010-10-01	2.87167
2011-01-01	3.00013
2011-04-01	3.43863
2011-07-01	2.93474
2011-10-01	3.63543
2012-01-01	4.03713
2012-04-01	5.11150
2012-07-01	5.26289
2012-10-01	5.08897
2013-01-01	5.68738
2013-04-01	6.18850
2013-07-01	6.49115
2013-10-01	6.83579
2014-01-01	7.33579
2014-04-01	6.93579
2014-07-01	6.94867
2014-10-01	6.82008
2015-01-01	7.12008
2015-04-01	7.30234