Quarter	Billions of US Dollars
1993-07-01	0.2853
1993-10-01	0.5682
1994-01-01	1.5908
1994-04-01	1.6029
1994-07-01	2.2142
1994-10-01	2.2023
1995-01-01	2.3073
1995-04-01	2.3638
1995-07-01	2.2156
1995-10-01	2.5642
1996-01-01	2.9232
1996-04-01	2.8881
1996-07-01	3.8715
1996-10-01	3.8207
1997-01-01	3.7480
1997-04-01	4.1230
1997-07-01	4.0576
1997-10-01	4.4794
1998-01-01	4.4552
1998-04-01	4.3994
1998-07-01	4.2377
1998-10-01	5.3639
1999-01-01	5.3052
1999-04-01	5.2898
1999-07-01	5.1278
1999-10-01	5.1418
2000-01-01	5.1055
2000-04-01	5.1084
2000-07-01	5.3513
2000-10-01	5.3082
2001-01-01	5.2284
2001-04-01	6.6893
2001-07-01	6.0739
2001-10-01	5.9687
2002-01-01	5.9536
2002-04-01	5.8858
2002-07-01	5.8650
2002-10-01	5.2606
2003-01-01	4.9818
2003-04-01	5.0125
2003-07-01	5.0704
2003-10-01	6.3534
2004-01-01	5.3324
2004-04-01	5.3006
2004-07-01	5.0392
2004-10-01	7.0403
2005-01-01	6.9006
2005-04-01	6.7203
2005-07-01	6.4366
2005-10-01	6.3852
2006-01-01	6.4455
2006-04-01	5.8668
2006-07-01	5.5573
2006-10-01	5.6279
2007-01-01	5.6495
2007-04-01	5.6719
2007-07-01	5.7720
2007-10-01	5.8487
2008-01-01	6.0136
2008-04-01	6.0009
2008-07-01	5.7983
2008-10-01	4.2019
2009-01-01	4.1327
2009-04-01	4.2176
2009-07-01	4.2757
2009-10-01	3.7492
2010-01-01	3.6551
2010-04-01	3.5400
2010-07-01	3.6847
2010-10-01	4.8669
2011-01-01	4.9612
2011-04-01	4.0054
2011-07-01	7.0868
2011-10-01	7.0664
2012-01-01	7.1058
2012-04-01	13.0991
2012-07-01	13.9766
2012-10-01	13.6054
2013-01-01	13.5841
2013-04-01	13.7787
2013-07-01	14.6892
2013-10-01	15.1114
2014-01-01	15.0048
2014-04-01	16.6983
2014-07-01	14.7151
2014-10-01	15.4815
2015-01-01	15.4244
2015-04-01	12.8472