Quarter	Billions of US Dollars
1993-10-01	0.09378
1994-01-01	0.01967
1997-04-01	0.05051
2003-07-01	0.00131
2004-04-01	0.05074
2004-07-01	0.12422
2004-10-01	0.00182
2005-04-01	0.10014
2005-07-01	0.02333
2005-10-01	0.08174
2006-01-01	0.27099
2006-04-01	3.21765
2006-07-01	0.24676
2006-10-01	0.79490
2007-01-01	1.24880
2007-04-01	0.80685
2007-07-01	0.35929
2007-10-01	0.49523
2008-01-01	0.53429
2008-04-01	0.72643
2008-07-01	0.61470
2008-10-01	0.31792
2009-01-01	0.02351
2009-04-01	0.11926
2009-07-01	0.40764
2009-10-01	0.07328
2010-01-01	0.05128
2010-04-01	0.09370
2010-07-01	0.33662
2011-04-01	0.13138
2011-07-01	0.16770
2011-10-01	0.02522
2012-01-01	0.02718
2012-04-01	0.07208
2012-07-01	0.08809
2012-10-01	0.01224
2013-01-01	0.00406
2013-04-01	0.06440
2013-07-01	0.08848
2013-10-01	0.04921
2014-01-01	0.08430
2014-04-01	0.01455
2014-07-01	0.02656
2014-10-01	0.05717
2015-01-01	0.11978
2015-04-01	0.03663