Quarter	Billions of US Dollars
1993-07-01	5.28385
1993-10-01	4.97447
1994-01-01	6.63713
1994-04-01	6.21494
1994-07-01	6.82478
1994-10-01	6.47500
1995-01-01	1.52178
1995-04-01	4.08945
1995-07-01	4.51780
1995-10-01	4.94320
1996-01-01	6.41643
1996-04-01	9.13156
1996-07-01	5.37758
1996-10-01	4.87113
1997-01-01	4.41746
1997-04-01	4.24964
1997-07-01	5.65516
1997-10-01	3.29418
1998-01-01	5.91910
1998-04-01	3.92691
1998-07-01	2.63331
1998-10-01	1.85207
1999-01-01	1.90922
1999-04-01	3.23205
1999-07-01	1.88740
1999-10-01	2.33964
2000-01-01	2.29717
2000-04-01	1.44511
2000-07-01	1.92066
2000-10-01	2.87999
2001-01-01	2.87785
2001-04-01	1.93501
2001-07-01	0.93555
2001-10-01	0.96753
2002-01-01	0.76682
2002-04-01	0.62141
2002-07-01	0.51601
2002-10-01	1.51584
2003-01-01	2.99260
2003-04-01	1.50994
2003-07-01	1.66636
2003-10-01	1.18522
2004-01-01	0.84558
2004-04-01	0.98939
2004-07-01	0.57765
2004-10-01	1.46304
2005-01-01	0.84923
2005-04-01	0.96701
2005-07-01	0.82938
2005-10-01	0.69201
2006-01-01	1.24506
2006-04-01	1.52440
2006-07-01	1.38672
2006-10-01	0.94550
2007-01-01	3.71239
2007-04-01	2.25650
2007-07-01	1.42308
2007-10-01	2.82926
2008-01-01	2.27662
2008-04-01	3.20938
2008-07-01	2.79472
2008-10-01	2.58447
2009-01-01	2.60196
2009-04-01	1.69604
2009-07-01	1.91789
2009-10-01	1.85640
2010-01-01	2.07794
2010-04-01	2.33716
2010-07-01	2.06085
2010-10-01	2.15842
2011-01-01	2.05901
2011-04-01	2.94971
2011-07-01	2.47625
2011-10-01	3.48505
2012-01-01	5.76731
2012-04-01	7.49117
2012-07-01	5.99082
2012-10-01	7.98897
2013-01-01	8.58690
2013-04-01	8.40794
2013-07-01	7.97678
2013-10-01	7.48641
2014-01-01	8.73667
2014-04-01	8.69333
2014-07-01	6.92626
2014-10-01	6.54920
2015-01-01	5.11941
2015-04-01	6.04179