Quarter	Billions of US Dollars
2001-10-01	0.01013
2002-01-01	0.01003
2003-01-01	0.00872
2003-04-01	0.00914
2003-07-01	0.00932
2003-10-01	0.00758
2006-01-01	0.01634
2006-04-01	0.01716
2006-07-01	0.01709
2006-10-01	0.01778
2009-10-01	0.43218
2010-01-01	0.40437
2010-04-01	0.36813
2010-07-01	0.40944
2010-10-01	0.40086
2011-01-01	0.42621
2011-04-01	0.43359
2011-07-01	0.40509
2011-10-01	0.38817
2012-01-01	0.40068
2012-04-01	0.37770
2012-07-01	0.38790
2012-10-01	0.39582
2013-01-01	0.38415
2013-04-01	0.39240
2013-07-01	0.40515
2013-10-01	0.41373
2014-01-01	0.41364
2014-04-01	0.77168
2014-07-01	0.71094
2014-10-01	0.68597
2015-01-01	0.60788
2015-04-01	0.63218