Quarter	Billions of US Dollars
2004-07-01	0.11291
2004-10-01	0.00848
2005-01-01	0.17079
2005-04-01	0.31379
2005-07-01	0.03960
2005-10-01	0.01188
2006-01-01	0.00198
2006-10-01	0.03960
2007-04-01	0.04890
2007-07-01	0.22362
2007-10-01	0.22178
2008-01-01	0.15842
2008-04-01	0.07053
2009-10-01	0.00000
2010-01-01	0.04006
2010-04-01	0.05049
2010-07-01	0.74654
2010-10-01	0.54363
2011-01-01	0.43987
2011-04-01	0.05027
2011-07-01	0.00627
2013-01-01	0.00000