Quarter	Billions of US Dollars
1993-07-01	0.09260
1993-10-01	0.13689
1994-01-01	0.29289
1994-04-01	0.42890
1994-07-01	0.33966
1994-10-01	0.28754
1995-01-01	0.14454
1996-07-01	0.36046
1996-10-01	0.64655
1997-01-01	1.00927
1997-04-01	1.09441
1997-07-01	0.70413
1997-10-01	0.38630
1998-04-01	0.28399
1998-07-01	0.60559
1998-10-01	0.86029
1999-01-01	0.99709
1999-04-01	0.66175
1999-07-01	0.37436
1999-10-01	0.34569
2000-01-01	0.15000
2000-04-01	0.15000
2000-07-01	0.15000
2000-10-01	0.14000
2001-01-01	0.14000
2001-04-01	0.14000
2001-07-01	0.14000
2002-07-01	0.24681
2002-10-01	0.25021
2003-01-01	0.44100
2003-04-01	0.45097
2003-07-01	0.20460
2003-10-01	0.27861
2004-01-01	0.44766
2004-04-01	0.44360
2004-07-01	0.52740
2004-10-01	0.51377
2005-01-01	0.07918
2005-04-01	0.07699
2005-10-01	0.29493
2006-01-01	0.78572
2006-04-01	0.83604
2006-07-01	1.26335
2006-10-01	1.07677
2007-01-01	0.74051
2007-04-01	1.37548
2007-07-01	0.96063
2007-10-01	0.64709
2008-01-01	1.28100
2008-04-01	1.18861
2008-07-01	1.24779
2008-10-01	2.04914
2009-01-01	1.33202
2009-04-01	1.05570
2009-07-01	0.92034
2009-10-01	1.42406
2010-01-01	3.31583
2010-04-01	3.01866
2010-07-01	3.76685
2010-10-01	2.66424
2011-01-01	0.94750
2011-04-01	0.96391
2011-07-01	0.76154
2011-10-01	0.93165
2012-01-01	1.25438
2012-04-01	1.92090
2012-07-01	3.23756
2012-10-01	3.33047
2013-01-01	2.87251
2013-04-01	3.19276
2013-07-01	1.97348
2013-10-01	2.51178
2014-01-01	3.40972
2014-04-01	2.90400
2014-07-01	2.26775
2014-10-01	1.97598
2015-01-01	1.22241
2015-04-01	2.12656