Quarter	Billions of US Dollars
1987-01-01	0.20000
1987-04-01	0.20000
1987-07-01	0.20000
2004-10-01	0.18667
2005-01-01	0.18667
2005-04-01	0.18692
2005-07-01	0.18692
2005-10-01	0.88692
2006-01-01	0.88692
2006-04-01	1.88692
2006-07-01	1.92680
2006-10-01	2.42789
2007-01-01	2.42786
2007-04-01	2.42768
2007-07-01	2.42940
2007-10-01	2.43109
2008-01-01	2.43697
2008-04-01	2.43580
2008-07-01	2.38667
2008-10-01	2.38667
2009-01-01	2.46829
2009-04-01	2.48751
2009-07-01	2.50083
2009-10-01	2.49168
2010-01-01	3.33566
2010-04-01	3.33144
2010-07-01	3.34103
2010-10-01	2.64686
2011-01-01	2.64410
2011-04-01	1.64370
2011-07-01	1.77588
2011-10-01	1.67517
2012-01-01	1.63100
2012-04-01	2.37448
2012-07-01	2.37332
2012-10-01	2.37116
2013-01-01	2.36426
2013-04-01	2.55681
2013-07-01	2.55712
2013-10-01	2.55388
2014-01-01	2.56324
2014-04-01	2.91332
2014-07-01	2.91617
2014-10-01	2.94531
2015-01-01	2.09619
2015-04-01	2.08325