Quarter	Billions of US Dollars
1989-07-01	61.883
1989-10-01	58.510
1990-01-01	65.353
1990-04-01	69.049
1990-07-01	76.672
1990-10-01	70.261
1991-01-01	80.122
1991-04-01	79.317
1991-07-01	79.883
1991-10-01	79.639
1992-01-01	86.452
1992-04-01	85.797
1992-07-01	81.857
1992-10-01	78.749
1993-01-01	73.102
1993-04-01	76.067
1993-07-01	77.391
1993-10-01	77.908
1994-01-01	79.126
1994-04-01	82.986
1994-07-01	85.660
1994-10-01	80.045
1995-01-01	79.112
1995-04-01	81.921
1995-07-01	83.849
1995-10-01	85.405
1996-01-01	90.823
1996-04-01	101.225
1996-07-01	98.815
1996-10-01	101.131
1997-01-01	107.329
1997-04-01	105.096
1997-07-01	109.401
1997-10-01	107.680
1998-01-01	113.547
1998-04-01	117.194
1998-07-01	128.725
1998-10-01	129.182
1999-01-01	149.632
1999-04-01	145.432
1999-07-01	163.853
1999-10-01	165.928
2000-01-01	167.667
2000-04-01	176.060
2000-07-01	187.098
2000-10-01	213.254
2001-01-01	229.099
2001-04-01	232.765
2001-07-01	227.341
2001-10-01	227.322
2002-01-01	231.910
2002-04-01	247.191
2002-07-01	264.483
2002-10-01	272.312
2003-01-01	318.480
2003-04-01	338.713
2003-07-01	320.300
2003-10-01	383.390
2004-01-01	381.275
2004-04-01	377.213
2004-07-01	415.373
2004-10-01	457.056
2005-01-01	475.710
2005-04-01	473.382
2005-07-01	462.519
2005-10-01	450.584
2006-01-01	516.405
2006-04-01	561.852
2006-07-01	585.122
2006-10-01	616.673
2007-01-01	732.832
2007-04-01	793.234
2007-07-01	751.086
2007-10-01	678.910
2008-01-01	775.716
2008-04-01	777.844
2008-07-01	736.200
2008-10-01	672.287
2009-01-01	625.863
2009-04-01	634.686
2009-07-01	662.110
2009-10-01	572.910
2010-01-01	569.018
2010-04-01	498.123
2010-07-01	532.028
2010-10-01	486.210
2011-01-01	531.481
2011-04-01	533.933
2011-07-01	550.832
2011-10-01	547.657
2012-01-01	590.264
2012-04-01	539.457
2012-07-01	522.821
2012-10-01	502.389
2013-01-01	507.373
2013-04-01	507.270
2013-07-01	541.798
2013-10-01	484.842
2014-01-01	513.739
2014-04-01	544.624
2014-07-01	541.239
2014-10-01	521.637
2015-01-01	530.494
2015-04-01	509.097