Quarter	Billions of US Dollars
1993-07-01	1.0749
1993-10-01	1.0603
1994-01-01	0.9645
1994-04-01	0.9853
1994-07-01	0.9087
1994-10-01	0.9311
1995-01-01	0.8874
1995-04-01	0.9900
1995-07-01	0.9671
1995-10-01	0.9662
1996-01-01	1.1714
1996-04-01	1.4430
1996-07-01	2.7849
1996-10-01	4.0689
1997-01-01	4.9925
1997-04-01	6.2179
1997-07-01	8.0378
1997-10-01	8.3045
1998-01-01	8.9786
1998-04-01	8.9306
1998-07-01	9.2329
1998-10-01	10.4201
1999-01-01	10.9668
1999-04-01	10.9134
1999-07-01	10.5275
1999-10-01	10.3567
2000-01-01	10.1463
2000-04-01	8.8370
2000-07-01	6.7076
2000-10-01	7.0757
2001-01-01	6.5268
2001-04-01	6.0400
2001-07-01	5.8553
2001-10-01	5.9070
2002-01-01	5.6893
2002-04-01	6.3052
2002-07-01	5.8921
2002-10-01	7.0743
2003-01-01	8.8674
2003-04-01	9.7510
2003-07-01	10.6388
2003-10-01	11.7415
2004-01-01	13.4554
2004-04-01	13.2918
2004-07-01	15.2273
2004-10-01	18.2108
2005-01-01	20.9431
2005-04-01	23.6605
2005-07-01	29.2763
2005-10-01	36.2205
2006-01-01	35.9382
2006-04-01	35.9818
2006-07-01	39.3413
2006-10-01	41.9956
2007-01-01	45.1892
2007-04-01	52.4846
2007-07-01	50.8327
2007-10-01	51.0162
2008-01-01	55.4008
2008-04-01	54.6601
2008-07-01	46.7895
2008-10-01	38.6574
2009-01-01	35.8417
2009-04-01	40.5700
2009-07-01	41.1075
2009-10-01	41.4708
2010-01-01	38.2535
2010-04-01	35.9582
2010-07-01	37.1170
2010-10-01	36.5384
2011-01-01	34.6059
2011-04-01	37.2759
2011-07-01	34.5065
2011-10-01	34.3870
2012-01-01	35.4076
2012-04-01	33.5917
2012-07-01	35.0848
2012-10-01	34.2217
2013-01-01	38.2401
2013-04-01	36.5060
2013-07-01	39.2912
2013-10-01	39.9815
2014-01-01	44.4797
2014-04-01	46.9994
2014-07-01	42.6056
2014-10-01	43.5869
2015-01-01	43.2796
2015-04-01	39.6994