Quarter	Billions of US Dollars
1993-07-01	0.2377
1993-10-01	0.2209
1994-01-01	0.2114
1994-04-01	0.1573
1994-07-01	0.1622
1994-10-01	0.1550
1995-01-01	0.1555
1995-04-01	0.1584
1995-07-01	0.1619
1995-10-01	0.1593
1996-01-01	0.1596
1996-04-01	0.1502
1996-07-01	0.1505
1996-10-01	0.1497
1997-01-01	0.1481
1997-04-01	0.1122
1997-07-01	0.1122
1997-10-01	0.1085
1998-01-01	0.1094
1998-04-01	0.1053
1998-07-01	0.1016
1998-10-01	0.1013
1999-01-01	0.1027
1999-04-01	0.1053
1999-07-01	0.1054
1999-10-01	0.1074
2000-01-01	0.1066
2000-04-01	0.1048
2000-07-01	0.1029
2000-10-01	0.1033
2001-01-01	0.0983
2001-04-01	0.1021
2001-07-01	0.0982
2001-10-01	0.0973
2002-01-01	0.0973
2002-04-01	0.1021
2002-07-01	0.0977
2002-10-01	0.0981
2003-01-01	0.0034
2003-04-01	0.0037
2003-07-01	0.0277
2003-10-01	0.0289
2004-01-01	0.0285
2004-04-01	0.0279
2004-07-01	0.0296
2004-10-01	0.0311
2005-01-01	0.0268
2005-04-01	0.0264
2005-07-01	0.0279
2005-10-01	0.0278
2006-01-01	0.0278
2006-04-01	0.0291
2006-07-01	0.0291
2006-10-01	0.0278
2007-01-01	0.0801
2007-04-01	0.4254
2007-07-01	0.4742
2007-10-01	0.5353
2008-01-01	0.5430
2008-04-01	0.8809
2008-07-01	0.8571
2008-10-01	0.7532
2009-01-01	0.7561
2009-04-01	1.0105
2009-07-01	2.2629
2009-10-01	2.9772
2010-01-01	3.5566
2010-04-01	3.8955
2010-07-01	4.5206
2010-10-01	6.1145
2011-01-01	6.5646
2011-04-01	7.2863
2011-07-01	7.6638
2011-10-01	8.2628
2012-01-01	9.2420
2012-04-01	9.0415
2012-07-01	9.6805
2012-10-01	10.1327
2013-01-01	10.3185
2013-04-01	10.5487
2013-07-01	11.3586
2013-10-01	13.3183
2014-01-01	13.0161
2014-04-01	14.1438
2014-07-01	13.3785
2014-10-01	12.2668
2015-01-01	11.4506
2015-04-01	12.3090