Quarter	Billions of US Dollars
1989-10-01	5.651
1990-01-01	5.598
1990-04-01	5.437
1990-07-01	5.416
1990-10-01	6.376
1991-01-01	6.294
1991-04-01	6.380
1991-07-01	6.533
1991-10-01	9.242
1992-01-01	9.329
1992-04-01	9.653
1992-07-01	9.447
1992-10-01	18.795
1993-01-01	18.286
1993-04-01	18.092
1993-07-01	17.737
1993-10-01	25.864
1994-01-01	27.891
1994-04-01	27.489
1994-07-01	28.047
1994-10-01	30.717
1995-01-01	32.016
1995-04-01	32.996
1995-07-01	32.587
1995-10-01	34.152
1996-01-01	35.445
1996-04-01	37.506
1996-07-01	41.431
1996-10-01	46.333
1997-01-01	46.928
1997-04-01	46.990
1997-07-01	45.785
1997-10-01	42.958
1998-01-01	43.828
1998-04-01	44.674
1998-07-01	46.966
1998-10-01	51.520
1999-01-01	50.976
1999-04-01	53.321
1999-07-01	57.758
1999-10-01	61.550
2000-01-01	67.364
2000-04-01	68.644
2000-07-01	69.378
2000-10-01	68.664
2001-01-01	71.042
2001-04-01	69.924
2001-07-01	77.767
2001-10-01	81.984
2002-01-01	88.166
2002-04-01	96.563
2002-07-01	98.563
2002-10-01	103.720
2003-01-01	108.705
2003-04-01	114.608
2003-07-01	122.685
2003-10-01	126.703
2004-01-01	135.372
2004-04-01	136.064
2004-07-01	138.214
2004-10-01	150.514
2005-01-01	154.893
2005-04-01	157.695
2005-07-01	153.140
2005-10-01	156.870
2006-01-01	160.238
2006-04-01	163.159
2006-07-01	160.992
2006-10-01	167.355
2007-01-01	164.753
2007-04-01	167.601
2007-07-01	167.372
2007-10-01	170.729
2008-01-01	183.958
2008-04-01	187.767
2008-07-01	176.569
2008-10-01	176.103
2009-01-01	170.332
2009-04-01	176.049
2009-07-01	180.723
2009-10-01	185.300
2010-01-01	189.203
2010-04-01	189.879
2010-07-01	198.686
2010-10-01	217.992
2011-01-01	217.813
2011-04-01	230.960
2011-07-01	217.986
2011-10-01	227.810
2012-01-01	235.243
2012-04-01	243.579
2012-07-01	254.026
2012-10-01	260.795
2013-01-01	259.881
2013-04-01	263.490
2013-07-01	269.455
2013-10-01	271.694
2014-01-01	268.576
2014-04-01	283.091
2014-07-01	278.247
2014-10-01	276.164
2015-01-01	279.217