Quarter	Billions of US Dollars
1996-04-01	0.04052
1997-01-01	0.01844
1997-04-01	0.01575
1997-07-01	0.06761
1997-10-01	0.02150
1998-01-01	0.01635
1999-01-01	0.05607
1999-04-01	0.05959
1999-07-01	0.01056
2002-04-01	0.09483
2002-07-01	0.19778
2004-04-01	0.03519
2005-10-01	0.36207
2007-10-01	0.03796
2011-07-01	0.32216
2012-01-01	0.39526
2013-04-01	0.15331
2014-01-01	0.13541