Quarter	Billions of US Dollars
1996-01-01	0.0058
1996-04-01	0.0058
1996-07-01	0.0058
1996-10-01	0.0300
1997-01-01	0.1992
1997-04-01	0.3037
1997-07-01	0.2287
1997-10-01	0.2325
1998-01-01	0.1276
1998-04-01	0.0730
1998-07-01	0.0980
1998-10-01	0.1268
1999-01-01	0.0759
1999-04-01	0.0967
1999-07-01	0.0195
1999-10-01	0.0182
2000-01-01	0.0766
2000-04-01	0.0152
2000-07-01	0.0146
2000-10-01	0.0134
2001-01-01	0.0096
2001-04-01	0.0087
2001-07-01	0.0103
2001-10-01	0.0096
2002-01-01	0.0104
2002-04-01	0.0115
2002-07-01	0.0111
2002-10-01	0.0112
2003-01-01	0.0112
2003-04-01	0.0121
2003-07-01	0.0119
2003-10-01	0.0118
2004-01-01	0.0116
2004-04-01	0.0106
2004-07-01	0.0109
2004-10-01	0.0108
2005-01-01	0.0105
2005-04-01	0.0103
2005-07-01	0.0653
2005-10-01	0.2392
2006-01-01	0.3874
2006-04-01	0.5540
2006-07-01	0.5948
2006-10-01	0.6190
2007-01-01	0.6130
2007-04-01	1.1788
2007-07-01	1.2250
2007-10-01	1.3579
2008-01-01	1.5777
2008-04-01	2.0534
2008-07-01	2.5025
2008-10-01	2.1286
2009-01-01	2.0556
2009-04-01	2.5529
2009-07-01	2.8749
2009-10-01	3.4366
2010-01-01	4.0621
2010-04-01	4.8667
2010-07-01	5.5295
2010-10-01	6.4730
2011-01-01	7.7392
2011-04-01	8.8078
2011-07-01	9.2621
2011-10-01	9.6903
2012-01-01	10.4228
2012-04-01	10.5141
2012-07-01	10.9895
2012-10-01	11.6759
2013-01-01	11.0405
2013-04-01	11.2482
2013-07-01	10.0987
2013-10-01	9.6829
2014-01-01	9.9832
2014-04-01	9.8844
2014-07-01	11.3274
2014-10-01	11.4836
2015-01-01	11.7562
2015-04-01	11.7237