Quarter	Billions of US Dollars
1997-07-01	0.24793
1997-10-01	0.23086
1998-01-01	0.22719
1998-04-01	0.21299
1998-07-01	0.22181
1998-10-01	0.25952
1999-01-01	0.24917
1999-04-01	0.24773
2000-07-01	0.70000
2000-10-01	0.70000
2001-01-01	0.70000
2001-04-01	0.91679
2001-07-01	0.23343
2001-10-01	0.85292
2002-01-01	1.14825
2002-04-01	0.95115
2002-07-01	0.94681
2002-10-01	0.60000
2003-01-01	1.30000
2003-04-01	1.30000
2003-07-01	1.56978
2003-10-01	1.28011
2004-01-01	0.28763
2004-04-01	0.27680
2004-07-01	0.27027
2004-10-01	0.28813
2005-01-01	0.27946
2005-04-01	0.93680
2005-07-01	0.96231
2005-10-01	0.94884
2006-01-01	0.96572
2006-04-01	0.30000
2007-10-01	1.58884
2008-01-01	1.63248
2008-04-01	1.63056
2008-07-01	1.57212
2008-10-01	0.50000
2009-01-01	0.50000
2009-04-01	0.50000
2009-07-01	0.50000
2010-04-01	1.00000
2010-07-01	1.00000
2010-10-01	1.00000
2011-01-01	1.00000
2011-10-01	0.47612
2012-01-01	0.47662
2012-04-01	0.47432
2012-07-01	1.26163
2012-10-01	2.11295
2013-01-01	2.11568
2013-04-01	3.02334
2013-07-01	4.09044
2013-10-01	4.16489
2014-01-01	4.14208
2014-04-01	5.68903
2014-07-01	3.71259
2014-10-01	3.28485
2015-01-01	3.27244
2015-04-01	0.80652