Quarter	Billions of US Dollars
1993-07-01	0.02233
1993-10-01	0.20072
1994-01-01	0.12436
1994-04-01	0.64790
1994-07-01	0.54275
1994-10-01	0.37436
1995-01-01	0.13169
1995-04-01	0.22231
1995-07-01	0.11216
1995-10-01	0.17531
1996-01-01	0.27345
1996-04-01	0.27023
1996-07-01	0.12889
1996-10-01	0.05764
1997-01-01	0.12002
1997-04-01	0.05328
1997-07-01	0.28404
1997-10-01	0.14273
1998-01-01	0.18259
1998-04-01	0.07918
1998-07-01	0.04056
1998-10-01	0.01789
1999-01-01	0.02230
1999-04-01	0.08876
1999-07-01	0.06628
1999-10-01	0.14515
2000-01-01	0.07357
2000-04-01	0.08897
2000-07-01	0.18558
2000-10-01	0.22046
2001-01-01	0.13529
2001-04-01	0.08577
2001-07-01	0.03458
2001-10-01	0.21671
2002-01-01	0.05910
2002-04-01	0.13301
2002-07-01	0.43987
2002-10-01	0.30394
2003-01-01	0.53033
2003-04-01	0.32013
2003-07-01	0.48814
2003-10-01	0.52149
2004-01-01	1.17509
2004-04-01	1.01986
2004-07-01	1.36722
2004-10-01	1.83184
2005-01-01	1.26515
2005-04-01	1.02216
2005-07-01	1.11640
2005-10-01	1.73342
2006-01-01	2.58915
2006-04-01	2.35836
2006-07-01	1.94058
2006-10-01	1.87774
2007-01-01	1.53570
2007-04-01	1.67472
2007-07-01	1.65138
2007-10-01	2.62677
2008-01-01	2.81375
2008-04-01	2.51665
2008-07-01	3.90616
2008-10-01	2.15671
2009-01-01	1.24657
2009-04-01	1.04184
2009-07-01	1.14884
2009-10-01	0.51283
2010-01-01	1.64461
2010-04-01	1.07168
2010-07-01	0.90230
2010-10-01	1.31272
2011-01-01	1.40129
2011-04-01	1.87877
2011-07-01	3.62544
2011-10-01	1.51658
2012-01-01	3.58248
2012-04-01	5.65884
2012-07-01	5.50818
2012-10-01	2.10743
2013-01-01	2.31561
2013-04-01	2.56692
2013-07-01	3.23343
2013-10-01	3.54691
2014-01-01	4.71983
2014-04-01	3.36395
2014-07-01	2.67053
2014-10-01	1.45181
2015-01-01	0.93107
2015-04-01	0.83568