Quarter	Billions of US Dollars
1993-07-01	0.00225
1993-10-01	0.00218
1994-01-01	0.00244
1994-04-01	0.00244
1994-07-01	0.00238
1994-10-01	0.00241
1995-01-01	0.00227
1995-04-01	0.00227
1995-07-01	0.00206
1995-10-01	0.00203
1996-01-01	0.00191
1996-04-01	0.00187
1996-07-01	0.00195
1996-10-01	0.00199
1997-01-01	0.00189
1997-04-01	0.00183
1997-07-01	0.00160
1997-10-01	0.00155
1998-01-01	0.00147
1998-04-01	0.00147
1998-07-01	0.00129
1998-10-01	0.00133
1999-01-01	0.00130
1999-04-01	0.00115
1999-07-01	0.00099
1999-10-01	0.00107
2000-01-01	0.00102
2000-04-01	0.00093
2000-07-01	0.00090
2000-10-01	0.00091
2001-01-01	0.00087
2001-04-01	0.00087
2001-07-01	0.00086
2001-10-01	0.00087
2002-01-01	0.10038
2002-04-01	0.09466
2002-07-01	0.08027
2002-10-01	0.07924
2003-01-01	0.07673
2003-04-01	0.08057
2003-07-01	0.07856
2003-10-01	0.08163
2004-01-01	0.08476
2004-04-01	0.08413
2004-07-01	0.08752
2004-10-01	0.48989
2005-01-01	0.93956
2005-04-01	0.95756
2005-07-01	0.97521
2005-10-01	1.29658
2006-01-01	1.54437
2006-04-01	1.37182
2006-07-01	1.85158
2006-10-01	1.99438
2007-01-01	2.11010
2007-04-01	3.29832
2007-07-01	3.49546
2007-10-01	3.66092
2008-01-01	4.01263
2008-04-01	3.95979
2008-07-01	3.48633
2008-10-01	3.60418
2009-01-01	3.09126
2009-04-01	3.77249
2009-07-01	4.40749
2009-10-01	4.18555
2010-01-01	3.75056
2010-04-01	4.68293
2010-07-01	5.76033
2010-10-01	5.13541
2011-01-01	6.71446
2011-04-01	7.07743
2011-07-01	6.58896
2011-10-01	6.50696
2012-01-01	7.11295
2012-04-01	7.10772
2012-07-01	7.88536
2012-10-01	8.03768
2013-01-01	8.13332
2013-04-01	7.82929
2013-07-01	8.22837
2013-10-01	8.25118
2014-01-01	8.21500
2014-04-01	8.63139
2014-07-01	9.06912
2014-10-01	7.81312
2015-01-01	7.25118
2015-04-01	7.23522