Quarter	Billions of US Dollars
1993-07-01	2.03095
1993-10-01	2.29661
1994-01-01	3.29483
1994-04-01	2.86870
1994-07-01	3.50501
1994-10-01	2.64232
1995-01-01	0.15737
1995-04-01	0.34250
1995-07-01	0.63500
1995-10-01	0.49253
1996-01-01	0.56600
1996-04-01	1.59540
1996-07-01	0.27065
1996-10-01	0.29868
1997-01-01	0.24040
1997-04-01	0.39930
1997-07-01	0.20560
1997-10-01	0.19946
1998-01-01	0.36043
1998-04-01	0.31892
1998-07-01	0.34316
1998-10-01	0.17281
1999-01-01	0.27920
1999-04-01	0.30070
1999-07-01	0.32287
1999-10-01	0.24734
2000-01-01	0.28546
2000-04-01	0.47265
2000-07-01	0.25733
2000-10-01	0.33430
2001-01-01	0.41500
2001-04-01	0.39535
2001-07-01	0.36528
2001-10-01	0.16704
2002-01-01	0.28261
2002-04-01	0.29566
2002-07-01	0.19356
2002-10-01	0.14965
2003-01-01	0.21319
2003-04-01	0.07487
2003-07-01	0.09372
2003-10-01	0.10725
2004-01-01	0.04790
2004-04-01	0.04875
2004-07-01	0.06801
2004-10-01	0.12674
2005-01-01	0.10674
2005-04-01	0.06687
2005-07-01	0.08778
2005-10-01	0.05124
2006-01-01	0.12097
2006-04-01	0.10685
2006-07-01	0.20186
2006-10-01	0.04695
2007-01-01	0.00800
2007-04-01	0.02400
2007-07-01	0.03400
2007-10-01	0.01750
2008-01-01	0.00950
2008-04-01	0.02600
2008-07-01	0.02000
2009-04-01	0.02800
2009-07-01	0.02200
2009-10-01	0.07450
2010-07-01	0.00410
2011-01-01	0.05675
2011-04-01	0.02700
2011-10-01	0.01000
2012-01-01	0.06650
2012-07-01	0.01525
2012-10-01	0.01000
2013-01-01	0.06060
2013-04-01	0.03802
2013-07-01	0.01792
2013-10-01	0.00900
2014-01-01	0.06000
2014-07-01	0.08000
2014-10-01	0.05000
2015-01-01	0.03300