Quarter	Billions of US Dollars
1989-07-01	64.635
1989-10-01	58.790
1990-01-01	64.087
1990-04-01	67.551
1990-07-01	73.656
1990-10-01	69.389
1991-01-01	78.507
1991-04-01	80.768
1991-07-01	79.296
1991-10-01	79.558
1992-01-01	85.528
1992-04-01	89.401
1992-07-01	94.166
1992-10-01	94.125
1993-01-01	80.768
1993-04-01	81.059
1993-07-01	90.760
1993-10-01	90.671
1994-01-01	91.663
1994-04-01	92.458
1994-07-01	92.802
1994-10-01	87.547
1995-01-01	81.191
1995-04-01	81.891
1995-07-01	87.631
1995-10-01	89.657
1996-01-01	91.513
1996-04-01	111.305
1996-07-01	101.224
1996-10-01	107.487
1997-01-01	108.499
1997-04-01	113.985
1997-07-01	124.433
1997-10-01	118.498
1998-01-01	126.085
1998-04-01	131.729
1998-07-01	140.283
1998-10-01	133.816
1999-01-01	141.238
1999-04-01	139.331
1999-07-01	139.506
1999-10-01	132.623
2000-01-01	134.360
2000-04-01	143.726
2000-07-01	158.984
2000-10-01	179.383
2001-01-01	181.494
2001-04-01	169.023
2001-07-01	149.989
2001-10-01	148.404
2002-01-01	140.137
2002-04-01	149.320
2002-07-01	146.405
2002-10-01	140.461
2003-01-01	155.029
2003-04-01	149.496
2003-07-01	146.063
2003-10-01	153.800
2004-01-01	171.008
2004-04-01	172.532
2004-07-01	180.778
2004-10-01	185.628
2005-01-01	188.806
2005-04-01	192.666
2005-07-01	190.445
2005-10-01	188.386
2006-01-01	212.607
2006-04-01	211.901
2006-07-01	230.839
2006-10-01	266.776
2007-01-01	310.433
2007-04-01	351.971
2007-07-01	362.064
2007-10-01	346.027
2008-01-01	351.251
2008-04-01	339.515
2008-07-01	344.427
2008-10-01	296.854
2009-01-01	275.267
2009-04-01	258.795
2009-07-01	274.201
2009-10-01	269.148
2010-01-01	286.248
2010-04-01	248.314
2010-07-01	273.968
2010-10-01	251.952
2011-01-01	268.706
2011-04-01	261.492
2011-07-01	266.625
2011-10-01	260.223
2012-01-01	271.932
2012-04-01	282.117
2012-07-01	288.850
2012-10-01	315.178
2013-01-01	323.048
2013-04-01	329.142
2013-07-01	349.841
2013-10-01	327.419
2014-01-01	323.702
2014-04-01	345.108
2014-07-01	359.029
2014-10-01	362.505
2015-01-01	380.102
2015-04-01	361.240