Quarter	Billions of US Dollars
1996-04-01	0.2199
1996-07-01	0.5449
1996-10-01	0.4099
1997-01-01	0.4099
1997-04-01	0.6352
1997-07-01	0.6324
1997-10-01	0.6250
1998-01-01	0.6184
1998-04-01	1.1669
1998-07-01	1.2222
1998-10-01	1.2162
1999-01-01	1.5802
1999-04-01	1.5304
1999-07-01	1.5677
1999-10-01	1.4952
2000-01-01	1.8229
2000-04-01	1.8193
2000-07-01	1.7003
2000-10-01	1.7775
2001-01-01	1.7947
2001-04-01	2.1157
2001-07-01	1.9245
2001-10-01	1.8551
2002-01-01	1.8368
2002-04-01	2.0898
2002-07-01	2.0662
2002-10-01	2.1910
2003-01-01	2.2748
2003-04-01	2.3800
2003-07-01	2.4263
2003-10-01	2.6232
2004-01-01	2.5397
2004-04-01	2.2729
2004-07-01	2.3199
2004-10-01	2.5401
2005-01-01	2.4186
2005-04-01	1.6486
2005-07-01	1.6418
2005-10-01	1.6047
2006-01-01	1.6462
2006-04-01	1.7243
2006-07-01	1.7172
2006-10-01	1.7780
2007-01-01	3.1297
2007-04-01	3.1737
2007-07-01	3.3321
2007-10-01	3.4594
2008-01-01	5.2970
2008-04-01	5.2809
2008-07-01	4.7915
2008-10-01	4.6622
2009-01-01	3.9259
2009-04-01	4.1695
2009-07-01	4.3197
2009-10-01	4.2498
2010-01-01	3.3024
2010-04-01	3.0064
2010-07-01	3.3438
2010-10-01	3.2737
2011-01-01	3.4807
2011-04-01	2.8906
2011-07-01	2.7006
2011-10-01	2.5878
2012-01-01	2.6712
2012-04-01	2.5180
2012-07-01	2.5860
2012-10-01	4.8888
2013-01-01	4.8110
2013-04-01	8.3660
2013-07-01	8.4510
2013-10-01	8.5082
2014-01-01	12.0076
2014-04-01	14.7132
2014-07-01	14.2832
2014-10-01	14.1064
2015-01-01	13.5536
2015-04-01	13.7256