Quarter	Billions of US Dollars
2000-01-01	0.01911
2000-04-01	0.01911
2000-07-01	0.01753
2000-10-01	0.01861
2001-07-01	0.09131
2001-10-01	0.08814
2002-01-01	0.21174
2002-04-01	0.27049
2002-07-01	0.21602
2002-10-01	0.28832
2003-01-01	0.23437
2003-04-01	0.21863
2003-07-01	0.58679
2003-10-01	1.01339
2004-01-01	1.36092
2004-04-01	1.63283
2004-07-01	1.07716
2004-10-01	0.95110
2005-01-01	0.81501
2005-04-01	0.62508
2005-07-01	1.30382
2005-10-01	1.11835
2006-01-01	1.34503
2006-04-01	1.32652
2006-07-01	0.42484
2006-10-01	0.61998
2007-01-01	0.40477
2007-04-01	0.66140
2007-07-01	0.97936
2007-10-01	0.68024
2008-01-01	0.70950
2008-04-01	0.49533
2008-07-01	0.24315
2008-10-01	0.23043
2009-01-01	0.30162
2009-04-01	0.32869
2009-07-01	0.37000
2009-10-01	0.52991
2010-01-01	0.41662
2010-04-01	0.49909
2010-07-01	0.44993
2010-10-01	0.29024
2011-01-01	0.19949
2011-04-01	0.03110
2011-07-01	0.16054
2011-10-01	0.18655
2012-01-01	0.07926
2012-04-01	0.48338
2012-07-01	0.49282
2012-10-01	0.47559
2013-01-01	0.46391
2013-04-01	0.00392
2013-07-01	0.00405
2013-10-01	0.04255
2014-01-01	0.15429
2014-04-01	0.15344
2014-07-01	0.46897
2014-10-01	0.41166
2015-01-01	0.29600
2015-04-01	0.31456