Quarter	Billions of US Dollars
2004-04-01	0.00171
2005-01-01	0.22623
2005-07-01	0.00979
2005-10-01	0.03073
2006-01-01	0.12115
2006-04-01	0.02947
2006-07-01	0.02066
2006-10-01	0.09849
2007-01-01	0.62461
2007-04-01	1.00801
2007-07-01	0.64160
2007-10-01	0.63476
2008-01-01	0.60122
2008-04-01	0.21292
2008-07-01	0.10642
2008-10-01	0.13918
2009-01-01	0.15588
2009-04-01	0.31378
2009-07-01	0.22431
2009-10-01	0.40690
2010-01-01	0.60000
2010-04-01	0.09131
2010-07-01	0.13982
2010-10-01	0.05517
2011-01-01	0.11319
2011-04-01	0.27535
2011-07-01	0.12608
2011-10-01	0.02855
2012-01-01	0.09026
2012-04-01	1.02343
2012-07-01	0.21388
2012-10-01	0.16891
2013-01-01	0.36913
2013-04-01	0.23576
2013-07-01	0.03135
2013-10-01	0.02158
2014-01-01	0.36301
2014-04-01	0.27040
2014-07-01	0.21161
2014-10-01	0.10264
2015-01-01	0.06744
2015-04-01	0.02127