Quarter	Billions of US Dollars
1993-07-01	3.0166
1993-10-01	0.3624
1994-01-01	1.2630
1994-04-01	0.7332
1994-07-01	0.9303
1994-10-01	0.6774
1995-01-01	2.3249
1995-04-01	1.8854
1995-07-01	0.6366
1995-10-01	0.8997
1996-01-01	0.7960
1996-04-01	1.0898
1996-07-01	1.6511
1996-10-01	1.6198
1997-01-01	1.5156
1997-04-01	0.7394
1997-07-01	0.3795
1997-10-01	0.5814
1998-01-01	0.6938
1998-04-01	0.4289
1998-07-01	1.9241
1998-10-01	0.6499
1999-01-01	1.0657
1999-04-01	1.2036
1999-07-01	1.0926
1999-10-01	1.4409
2000-01-01	1.0147
2000-04-01	1.4383
2000-07-01	0.9785
2000-10-01	1.5691
2001-01-01	2.7186
2001-04-01	1.7079
2001-07-01	2.2187
2001-10-01	1.9255
2002-01-01	2.4164
2002-04-01	1.0589
2002-07-01	1.3068
2002-10-01	1.5029
2003-01-01	2.8506
2003-04-01	2.9792
2003-07-01	2.7554
2003-10-01	3.0950
2004-01-01	4.4535
2004-04-01	2.3831
2004-07-01	3.3510
2004-10-01	4.2662
2005-01-01	3.7390
2005-04-01	2.9811
2005-07-01	2.7471
2005-10-01	3.6016
2006-01-01	2.8532
2006-04-01	3.4623
2006-07-01	3.6326
2006-10-01	3.8229
2007-01-01	4.0391
2007-04-01	4.5984
2007-07-01	2.8383
2007-10-01	1.7835
2008-01-01	4.1227
2008-04-01	6.0966
2008-07-01	7.5862
2008-10-01	17.8876
2009-01-01	18.5079
2009-04-01	15.2388
2009-07-01	16.4566
2009-10-01	12.5146
2010-01-01	15.4069
2010-04-01	10.8634
2010-07-01	12.3988
2010-10-01	9.8789
2011-01-01	9.1950
2011-04-01	6.3749
2011-07-01	5.3021
2011-10-01	5.4249
2012-01-01	7.5540
2012-04-01	5.8318
2012-07-01	5.0668
2012-10-01	5.1575
2013-01-01	4.7700
2013-04-01	4.1236
2013-07-01	4.6862
2013-10-01	3.2666
2014-01-01	3.5283
2014-04-01	3.9907
2014-07-01	3.4272
2014-10-01	3.8401
2015-01-01	3.2582
2015-04-01	3.1448