Quarter	Billions of US Dollars
1989-10-01	0.01300
1992-04-01	0.07000
1992-07-01	0.07700
1992-10-01	0.07200
1993-01-01	0.04000
1993-04-01	0.14300
1993-07-01	0.21495
1993-10-01	0.19426
1994-01-01	0.46876
1994-04-01	0.46850
1994-07-01	0.37321
1994-10-01	0.23971
1995-01-01	0.07518
1995-04-01	0.04204
1995-07-01	0.09111
1995-10-01	0.09730
1996-01-01	0.16992
1996-04-01	0.51970
1996-07-01	0.16975
1996-10-01	0.14685
1997-01-01	0.07533
1997-04-01	0.02780
1997-07-01	0.06512
1997-10-01	0.09123
1998-01-01	0.11937
1998-04-01	0.08576
1998-07-01	0.10782
1998-10-01	0.12698
1999-01-01	0.11403
1999-04-01	0.10024
1999-07-01	0.14400
1999-10-01	0.36879
2000-01-01	0.12606
2000-04-01	0.42099
2000-07-01	0.40347
2000-10-01	0.43459
2001-01-01	0.76944
2001-04-01	0.16387
2001-07-01	0.30648
2001-10-01	0.12985
2002-01-01	0.25303
2002-04-01	0.20939
2002-07-01	0.61735
2002-10-01	0.52067
2003-01-01	0.74144
2003-04-01	0.78470
2003-07-01	0.97814
2003-10-01	1.14658
2004-01-01	0.91873
2004-04-01	0.90182
2004-07-01	1.29947
2004-10-01	1.05558
2005-01-01	1.49557
2005-04-01	1.82446
2005-07-01	2.50409
2005-10-01	1.75655
2006-01-01	2.75331
2006-04-01	2.43577
2006-07-01	1.14430
2006-10-01	2.08040
2007-01-01	1.81861
2007-04-01	1.85610
2007-07-01	2.45840
2007-10-01	3.04569
2008-01-01	2.87034
2008-04-01	1.98803
2008-07-01	1.63267
2008-10-01	1.13071
2009-01-01	1.02227
2009-04-01	1.17005
2009-07-01	0.98920
2009-10-01	0.32537
2010-01-01	0.35296
2010-04-01	0.16694
2010-07-01	0.40497
2010-10-01	0.49494
2011-01-01	1.27448
2011-04-01	1.28473
2011-07-01	0.76890
2011-10-01	0.67053
2012-01-01	0.74288
2012-04-01	0.68852
2012-07-01	0.43888
2012-10-01	0.14434
2013-01-01	0.16357
2013-04-01	0.15709
2013-07-01	0.12721
2013-10-01	0.14392
2014-01-01	0.19524
2014-04-01	0.19473
2014-07-01	0.08981
2014-10-01	0.17641
2015-01-01	0.18837
2015-04-01	0.20191