Quarter	Billions of US Dollars
1993-07-01	0.4515
1993-10-01	0.6352
1994-01-01	0.6942
1994-04-01	0.4412
1994-07-01	0.4952
1994-10-01	0.3179
1995-01-01	0.3230
1995-04-01	0.2450
1995-07-01	0.2450
1995-10-01	0.5812
1996-01-01	0.8929
1996-04-01	0.8817
1996-07-01	0.6405
1996-10-01	0.5725
1997-01-01	0.2593
1997-04-01	0.3100
1997-07-01	0.3100
1997-10-01	0.2320
1998-01-01	0.3417
1998-04-01	0.3088
1998-07-01	0.3168
1998-10-01	0.8881
1999-01-01	0.8289
1999-04-01	1.2867
1999-07-01	1.2957
1999-10-01	0.4610
2000-01-01	0.4733
2000-04-01	0.1609
2000-07-01	0.1549
2000-10-01	0.3494
2001-01-01	0.6104
2001-04-01	0.5434
2001-07-01	0.6537
2001-10-01	1.0479
2002-01-01	0.8208
2002-04-01	0.8494
2002-07-01	0.6224
2002-10-01	1.4822
2003-01-01	1.4967
2003-04-01	2.0054
2003-07-01	2.0432
2003-10-01	0.9746
2004-01-01	0.9668
2004-04-01	0.4117
2004-07-01	0.4193
2004-10-01	0.2220
2005-01-01	0.4103
2005-04-01	1.7098
2005-07-01	2.2026
2005-10-01	3.7211
2006-01-01	3.8495
2006-04-01	2.6217
2006-07-01	2.8008
2006-10-01	1.5446
2007-01-01	1.2812
2007-04-01	1.8393
2007-07-01	1.7931
2007-10-01	1.3419
2008-01-01	2.0726
2008-04-01	3.7781
2008-07-01	3.0891
2008-10-01	3.1148
2009-01-01	3.2581
2009-04-01	1.6092
2009-07-01	1.6134
2009-10-01	1.5724
2010-01-01	0.8766
2010-04-01	0.0255
2010-07-01	1.0255
2010-10-01	1.0555
2011-01-01	1.1795
2011-04-01	2.3795
2011-07-01	3.7918
2011-10-01	4.7510
2012-01-01	3.6297
2012-04-01	6.5202
2012-07-01	4.1702
2012-10-01	4.2032
2013-01-01	4.6546
2013-04-01	6.5341
2013-07-01	6.5341
2013-10-01	9.4341
2014-01-01	12.4341
2014-04-01	6.9835
2014-07-01	8.2335
2014-10-01	7.4941
2015-01-01	3.8904
2015-04-01	4.2124