Quarter	Billions of US Dollars
1996-04-01	0.03000
1996-07-01	0.03000
1996-10-01	0.03000
1997-01-01	0.03000
1997-04-01	0.15608
1997-07-01	0.15309
1997-10-01	0.15106
1998-01-01	0.15250
1998-04-01	0.15179
1998-07-01	0.14985
1998-10-01	0.15135
1999-01-01	0.13587
1999-04-01	0.13715
1999-07-01	0.13430
1999-10-01	0.13380
2000-01-01	0.13388
2000-04-01	0.07353
2000-07-01	0.07353
2000-10-01	0.07353
2001-01-01	0.31199
2001-04-01	0.27249
2001-07-01	0.29007
2001-10-01	0.27015
2002-01-01	0.26775
2002-04-01	0.26932
2002-07-01	0.26622
2002-10-01	0.28315
2003-01-01	0.29417
2003-04-01	0.30853
2003-07-01	0.31460
2003-10-01	0.34101
2004-01-01	0.33005
2004-04-01	0.32818
2004-07-01	0.33504
2004-10-01	0.36777
2005-01-01	0.35003
2005-04-01	0.32648
2005-07-01	0.32513
2005-10-01	0.31852
2006-01-01	0.32681
2006-04-01	0.34325
2006-07-01	0.34182
2006-10-01	0.35559
2007-01-01	0.35959
2007-04-01	0.36464
2007-07-01	0.38283
2011-10-01	0.23290
2012-01-01	0.94141
2012-04-01	0.92762
2012-07-01	0.93374
2012-10-01	0.93849
2013-01-01	0.93149
2013-04-01	0.93644
2013-07-01	0.94409
2013-10-01	0.94928
2014-01-01	0.94922
2014-04-01	1.62974
2014-07-01	1.90393
2014-10-01	1.86168
2015-01-01	1.72956
2015-04-01	1.77067