Quarter	Billions of US Dollars
1999-10-01	0.0953
2000-01-01	0.0953
2000-04-01	0.2042
2000-07-01	0.2042
2000-10-01	0.2042
2001-01-01	0.2042
2001-04-01	0.0953
2001-07-01	0.0953
2001-10-01	0.0953
2002-01-01	0.0953
2002-04-01	0.0953
2002-07-01	0.0953
2006-07-01	0.5993
2006-10-01	0.9805
2007-01-01	1.3149
2007-04-01	1.2809
2007-07-01	1.3157
2007-10-01	4.4703
2008-01-01	6.4832
2008-04-01	14.6215
2008-07-01	16.3592
2008-10-01	15.9550
2009-01-01	15.1313
2009-04-01	15.4651
2009-07-01	15.6108
2009-10-01	15.2890
2010-01-01	15.1185
2010-04-01	14.1383
2010-07-01	14.3658
2010-10-01	14.5536
2011-01-01	15.1801
2011-04-01	12.9478
2011-07-01	13.7605
2011-10-01	13.5507
2012-01-01	12.3704
2012-04-01	10.3897
2012-07-01	10.2791
2012-10-01	10.2793
2013-01-01	9.6357
2013-04-01	5.0322
2013-07-01	4.1302
2013-10-01	4.0931
2014-01-01	3.9072
2014-04-01	3.9848
2014-07-01	3.9808
2014-10-01	3.3025
2015-01-01	2.2175
2015-04-01	2.3536