Quarter	Billions of US Dollars
1993-07-01	73.637
1993-10-01	69.335
1994-01-01	79.709
1994-04-01	73.310
1994-07-01	76.656
1994-10-01	71.333
1995-01-01	81.465
1995-04-01	79.723
1995-07-01	82.769
1995-10-01	85.144
1996-01-01	90.819
1996-04-01	108.794
1996-07-01	96.599
1996-10-01	98.020
1997-01-01	102.592
1997-04-01	105.385
1997-07-01	111.964
1997-10-01	112.622
1998-01-01	118.637
1998-04-01	109.007
1998-07-01	129.427
1998-10-01	122.480
1999-01-01	150.933
1999-04-01	148.545
1999-07-01	173.844
1999-10-01	152.611
2000-01-01	197.429
2000-04-01	215.751
2000-07-01	219.970
2000-10-01	233.727
2001-01-01	245.734
2001-04-01	239.331
2001-07-01	218.469
2001-10-01	218.504
2002-01-01	220.876
2002-04-01	240.363
2002-07-01	271.039
2002-10-01	264.632
2003-01-01	324.369
2003-04-01	321.988
2003-07-01	302.570
2003-10-01	350.623
2004-01-01	406.480
2004-04-01	386.293
2004-07-01	424.186
2004-10-01	450.060
2005-01-01	476.689
2005-04-01	478.228
2005-07-01	467.877
2005-10-01	441.004
2006-01-01	509.577
2006-04-01	524.172
2006-07-01	546.820
2006-10-01	576.499
2007-01-01	687.140
2007-04-01	728.190
2007-07-01	711.952
2007-10-01	743.426
2008-01-01	882.512
2008-04-01	894.879
2008-07-01	816.529
2008-10-01	654.312
2009-01-01	635.428
2009-04-01	620.947
2009-07-01	678.994
2009-10-01	547.475
2010-01-01	630.814
2010-04-01	536.795
2010-07-01	603.299
2010-10-01	534.008
2011-01-01	580.780
2011-04-01	539.654
2011-07-01	553.806
2011-10-01	545.038
2012-01-01	695.087
2012-04-01	563.302
2012-07-01	472.201
2012-10-01	445.842
2013-01-01	531.970
2013-04-01	471.587
2013-07-01	465.902
2013-10-01	443.232
2014-01-01	488.018
2014-04-01	508.038
2014-07-01	486.002
2014-10-01	460.979
2015-01-01	474.873
2015-04-01	429.764