Quarter	Billions of US Dollars
1997-04-01	0.13238
1998-04-01	0.01004
2001-01-01	0.01201
2001-10-01	0.15903
2003-04-01	0.05799
2003-07-01	0.10845
2003-10-01	0.02952
2004-01-01	0.01840
2004-04-01	0.06843
2004-07-01	0.03895
2004-10-01	0.20601
2005-04-01	0.02934
2005-07-01	0.30086
2005-10-01	0.01927
2006-01-01	0.10934
2006-04-01	0.02780
2006-07-01	0.00139
2006-10-01	0.08612
2007-04-01	0.00301
2007-10-01	0.15788
2008-01-01	0.00150
2008-07-01	0.00496
2009-04-01	0.29350
2009-10-01	0.02475
2010-01-01	0.33613
2010-04-01	0.09858
2010-07-01	0.11658
2010-10-01	0.07983
2011-01-01	0.00714
2011-04-01	0.00831
2011-07-01	0.00322
2011-10-01	0.01766
2012-01-01	0.00650
2012-04-01	0.05267
2013-01-01	0.32635
2013-04-01	0.02901
2014-04-01	0.00181
2014-07-01	0.04090
2014-10-01	0.02723