Quarter	Billions of US Dollars
1993-07-01	2.0814
1993-10-01	3.6065
1994-01-01	4.3079
1994-04-01	4.2199
1994-07-01	4.2254
1994-10-01	5.1132
1995-01-01	4.7974
1995-04-01	4.7348
1995-07-01	4.9176
1995-10-01	5.4569
1996-01-01	5.4180
1996-04-01	6.1651
1996-07-01	6.5495
1996-10-01	6.5314
1997-01-01	7.3714
1997-04-01	8.3747
1997-07-01	10.0360
1997-10-01	9.5658
1998-01-01	10.1007
1998-04-01	12.1724
1998-07-01	11.9217
1998-10-01	11.7135
1999-01-01	11.6456
1999-04-01	11.9897
1999-07-01	12.3790
1999-10-01	11.5790
2000-01-01	11.4114
2000-04-01	11.4937
2000-07-01	11.5912
2000-10-01	10.4116
2001-01-01	10.3669
2001-04-01	10.2930
2001-07-01	10.3147
2001-10-01	9.6999
2002-01-01	9.4069
2002-04-01	9.0645
2002-07-01	8.0949
2002-10-01	7.9968
2003-01-01	7.5662
2003-04-01	7.0673
2003-07-01	6.4805
2003-10-01	6.5579
2004-01-01	5.5221
2004-04-01	4.9218
2004-07-01	4.4611
2004-10-01	4.6612
2005-01-01	4.7846
2005-04-01	4.1003
2005-07-01	3.9372
2005-10-01	4.1671
2006-01-01	4.1798
2006-04-01	4.2049
2006-07-01	4.2782
2006-10-01	4.5193
2007-01-01	4.4004
2007-04-01	4.3578
2007-07-01	4.0717
2007-10-01	4.7779
2008-01-01	4.4738
2008-04-01	3.1983
2008-07-01	2.8633
2008-10-01	2.8633
2009-01-01	2.4183
2009-04-01	2.2426
2009-07-01	2.2426
2009-10-01	2.5926
2010-01-01	2.5926
2010-04-01	2.5681
2010-07-01	2.9676
2010-10-01	3.2606
2011-01-01	3.6256
2011-04-01	3.5539
2011-07-01	3.8561
2011-10-01	3.8042
2012-01-01	3.6572
2012-04-01	3.6434
2012-07-01	3.4740
2012-10-01	3.4723
2013-01-01	3.7752
2013-04-01	3.9504
2013-07-01	3.9473
2013-10-01	4.6150
2014-01-01	4.5236
2014-04-01	5.8584
2014-07-01	5.9800
2014-10-01	5.5112
2015-01-01	5.9853
2015-04-01	7.4892