Quarter	Billions of US Dollars
1993-07-01	0.35125
1993-10-01	0.57037
1994-01-01	0.80496
1994-04-01	0.46945
1994-07-01	0.74118
1994-10-01	0.67340
1995-01-01	0.70348
1995-04-01	0.47606
1995-07-01	0.66039
1995-10-01	0.64039
1996-01-01	0.64448
1996-04-01	1.11556
1996-07-01	0.76123
1996-10-01	1.41870
1997-01-01	1.33494
1997-04-01	1.41277
1997-07-01	0.85324
1997-10-01	1.64717
1998-01-01	1.13800
1998-04-01	0.93930
1998-07-01	0.97265
1998-10-01	1.24113
1999-01-01	0.66033
1999-04-01	0.86626
1999-07-01	1.24875
1999-10-01	0.65159
2000-01-01	1.24416
2000-04-01	1.20195
2000-07-01	1.11073
2000-10-01	1.58848
2001-01-01	1.86313
2001-04-01	2.24788
2001-07-01	1.78164
2001-10-01	1.58354
2002-01-01	1.34187
2002-04-01	1.60401
2002-07-01	2.15631
2002-10-01	0.90055
2003-01-01	2.05972
2003-04-01	0.98761
2003-07-01	0.95672
2003-10-01	0.69947
2004-01-01	1.23518
2004-04-01	1.68583
2004-07-01	1.83920
2004-10-01	3.02188
2005-01-01	1.46797
2005-04-01	1.41567
2005-07-01	1.31385
2005-10-01	0.64873
2006-01-01	0.52104
2006-04-01	0.42893
2006-07-01	0.39694
2006-10-01	0.36300
2007-01-01	0.62839
2007-04-01	0.38100
2007-07-01	0.26169
2007-10-01	1.26534
2008-01-01	0.62882
2008-04-01	0.56019
2008-07-01	0.42837
2008-10-01	0.03550
2009-01-01	0.20846
2009-04-01	0.16529
2009-07-01	0.07151
2009-10-01	0.23569
2010-01-01	0.17337
2010-04-01	0.14877
2010-07-01	0.17195
2010-10-01	0.38340
2011-01-01	1.05534
2011-04-01	0.55057
2011-07-01	0.69646
2011-10-01	0.46941
2012-01-01	0.76112
2012-04-01	0.66062
2012-07-01	0.58057
2012-10-01	1.38893
2013-01-01	2.26036
2013-04-01	0.63343
2013-07-01	0.64108
2013-10-01	0.90829
2014-01-01	0.83277
2014-04-01	0.81996
2014-07-01	0.73455
2014-10-01	0.50459
2015-01-01	0.60262
2015-04-01	0.81406