Quarter	Billions of US Dollars
2006-10-01	0.23567
2007-01-01	0.30641
2007-04-01	0.31073
2007-07-01	0.37335
2007-10-01	0.40941
2008-01-01	0.57046
2008-04-01	0.68880
2008-07-01	0.83200
2008-10-01	0.82006
2009-01-01	0.79450
2009-04-01	0.90886
2009-07-01	0.95544
2009-10-01	0.64231
2010-01-01	0.60384
2010-04-01	0.54971
2010-07-01	0.59882
2010-10-01	0.58268
2011-01-01	0.50452
2011-04-01	0.46451
2011-07-01	0.43398
2011-10-01	0.43568
2012-01-01	0.42685
2012-04-01	0.40237
2012-07-01	0.34383
2012-10-01	0.29326
2013-01-01	0.28485
2013-04-01	0.23412
2013-07-01	0.24173
2013-10-01	0.22909
2014-01-01	0.21154
2014-04-01	0.20955
2014-07-01	0.19306
2014-10-01	0.18657
2015-01-01	0.16507
2015-04-01	0.17167