Quarter	Billions of US Dollars
1993-07-01	32.305
1993-10-01	39.137
1994-01-01	43.895
1994-04-01	47.080
1994-07-01	49.365
1994-10-01	50.668
1995-01-01	48.756
1995-04-01	49.944
1995-07-01	52.954
1995-10-01	54.867
1996-01-01	57.665
1996-04-01	63.158
1996-07-01	66.574
1996-10-01	75.034
1997-01-01	78.568
1997-04-01	87.495
1997-07-01	96.465
1997-10-01	97.610
1998-01-01	100.464
1998-04-01	104.637
1998-07-01	104.412
1998-10-01	104.062
1999-01-01	102.608
1999-04-01	105.045
1999-07-01	105.776
1999-10-01	105.830
2000-01-01	108.622
2000-04-01	109.399
2000-07-01	109.477
2000-10-01	106.793
2001-01-01	107.144
2001-04-01	108.402
2001-07-01	110.066
2001-10-01	108.223
2002-01-01	108.207
2002-04-01	111.079
2002-07-01	109.124
2002-10-01	112.013
2003-01-01	114.186
2003-04-01	115.048
2003-07-01	117.401
2003-10-01	120.967
2004-01-01	125.285
2004-04-01	126.130
2004-07-01	126.686
2004-10-01	128.856
2005-01-01	131.608
2005-04-01	131.378
2005-07-01	138.463
2005-10-01	143.705
2006-01-01	149.405
2006-04-01	151.644
2006-07-01	157.141
2006-10-01	168.819
2007-01-01	172.714
2007-04-01	191.921
2007-07-01	194.825
2007-10-01	203.045
2008-01-01	204.770
2008-04-01	206.800
2008-07-01	209.575
2008-10-01	203.513
2009-01-01	198.815
2009-04-01	208.610
2009-07-01	228.634
2009-10-01	246.806
2010-01-01	254.070
2010-04-01	267.534
2010-07-01	278.583
2010-10-01	291.051
2011-01-01	309.623
2011-04-01	330.292
2011-07-01	331.431
2011-10-01	352.690
2012-01-01	369.968
2012-04-01	380.572
2012-07-01	401.631
2012-10-01	423.620
2013-01-01	443.453
2013-04-01	470.662
2013-07-01	489.349
2013-10-01	512.309
2014-01-01	520.039
2014-04-01	543.433
2014-07-01	552.035
2014-10-01	567.359
2015-01-01	567.730
2015-04-01	594.620