Quarter	Billions of US Dollars
1993-10-01	0.0105
1994-01-01	0.0105
1994-04-01	0.0105
1994-07-01	0.0105
1994-10-01	0.0105
1995-01-01	0.0105
1995-04-01	0.0105
1995-07-01	0.0355
1995-10-01	0.0250
1996-01-01	0.0420
1996-04-01	0.0420
1996-07-01	0.0670
1996-10-01	0.0470
1997-01-01	0.0200
1998-01-01	0.0350
1998-04-01	0.0600
1998-07-01	0.0560
1998-10-01	0.0560
1999-01-01	0.0500
1999-04-01	0.0610
1999-07-01	0.0910
1999-10-01	0.0910
2000-01-01	0.0510
2000-04-01	0.0630
2000-07-01	0.0742
2000-10-01	0.1781
2001-01-01	0.1925
2001-04-01	0.2315
2001-07-01	0.1114
2001-10-01	0.1089
2002-01-01	0.1025
2002-04-01	0.1075
2002-07-01	0.0869
2002-10-01	0.0948
2003-01-01	0.1281
2003-04-01	0.2107
2003-07-01	0.2392
2003-10-01	0.2358
2004-01-01	0.2017
2004-04-01	0.3250
2004-07-01	0.7269
2004-10-01	0.8948
2005-01-01	1.1203
2005-04-01	1.1296
2005-07-01	0.3827
2005-10-01	0.5880
2006-01-01	0.4517
2006-04-01	0.5098
2006-07-01	0.5521
2006-10-01	0.3304
2007-01-01	0.3294
2007-04-01	0.1204
2007-07-01	0.2174
2007-10-01	0.3166
2008-01-01	0.7012
2008-04-01	1.0871
2008-07-01	1.0839
2008-10-01	0.9560
2009-01-01	0.7021
2009-04-01	0.7028
2009-07-01	0.6418
2009-10-01	0.7163
2010-01-01	0.8378
2010-04-01	0.8971
2010-07-01	1.1515
2010-10-01	2.0052
2011-01-01	3.1116
2011-04-01	6.1059
2011-07-01	6.7496
2011-10-01	9.4288
2012-01-01	17.7359
2012-04-01	19.1869
2012-07-01	19.1678
2012-10-01	24.7966
2013-01-01	32.5044
2013-04-01	38.5298
2013-07-01	46.2278
2013-10-01	53.1429
2014-01-01	68.2422
2014-04-01	79.9865
2014-07-01	85.4661
2014-10-01	81.5501
2015-01-01	80.0161
2015-04-01	76.1164