Quarter	Billions of US Dollars
1977-01-01	0.0421
2002-07-01	0.2300
2004-01-01	1.3000
2004-10-01	1.0000
2005-01-01	1.0750
2005-04-01	2.0000
2005-07-01	0.4000
2005-10-01	6.3550
2006-01-01	0.5893
2006-04-01	2.2943
2006-07-01	0.6254
2006-10-01	10.4991
2007-01-01	3.1802
2007-04-01	1.8295
2007-07-01	5.0107
2007-10-01	5.2858
2008-01-01	3.2148
2008-04-01	6.2502
2008-07-01	2.0032
2009-01-01	0.1500
2009-04-01	6.1699
2009-07-01	6.0098
2009-10-01	1.8767
2010-01-01	0.9182
2010-04-01	1.1975
2010-07-01	0.5867
2010-10-01	4.8753
2011-01-01	1.3562
2011-04-01	6.2336
2011-07-01	0.3771
2011-10-01	2.9747
2012-01-01	3.3058
2012-04-01	0.4803
2012-07-01	2.2150
2012-10-01	8.9701
2013-01-01	4.0753
2013-04-01	4.1790
2013-07-01	1.0571
2013-10-01	3.5414
2014-01-01	2.5315
2014-04-01	11.3509
2014-07-01	2.2472
2014-10-01	5.8550
2015-01-01	6.6389
2015-04-01	6.4592