Quarter	Billions of US Dollars
1993-07-01	3.4897
1993-10-01	3.0964
1994-01-01	3.2602
1994-04-01	3.2024
1994-07-01	3.2112
1994-10-01	3.3511
1995-01-01	3.7674
1995-04-01	3.7566
1995-07-01	4.5722
1995-10-01	5.6594
1996-01-01	6.2553
1996-04-01	6.5099
1996-07-01	7.0581
1996-10-01	8.4575
1997-01-01	8.6882
1997-04-01	9.5419
1997-07-01	10.1297
1997-10-01	11.0995
1998-01-01	11.0369
1998-04-01	11.2034
1998-07-01	11.4948
1998-10-01	11.9530
1999-01-01	11.1425
1999-04-01	10.8769
1999-07-01	11.4173
1999-10-01	10.4961
2000-01-01	10.2584
2000-04-01	10.0719
2000-07-01	8.8413
2000-10-01	8.9379
2001-01-01	8.4264
2001-04-01	8.0744
2001-07-01	8.6973
2001-10-01	8.1592
2002-01-01	8.0917
2002-04-01	9.1311
2002-07-01	8.9324
2002-10-01	7.9811
2003-01-01	7.9099
2003-04-01	8.0366
2003-07-01	8.1983
2003-10-01	7.2826
2004-01-01	6.9728
2004-04-01	7.1200
2004-07-01	7.2060
2004-10-01	6.2495
2005-01-01	5.8898
2005-04-01	5.3603
2005-07-01	5.3249
2005-10-01	5.1204
2006-01-01	5.0694
2006-04-01	6.5214
2006-07-01	6.5713
2006-10-01	6.7559
2007-01-01	6.9228
2007-04-01	7.2865
2007-07-01	7.0426
2007-10-01	7.2304
2008-01-01	8.3029
2008-04-01	8.0556
2008-07-01	7.3910
2008-10-01	7.2176
2009-01-01	6.2720
2009-04-01	5.8232
2009-07-01	5.4577
2009-10-01	5.0620
2010-01-01	4.5359
2010-04-01	3.8573
2010-07-01	4.0412
2010-10-01	3.7020
2011-01-01	3.6350
2011-04-01	3.3998
2011-07-01	3.1680
2011-10-01	3.0130
2012-01-01	4.3508
2012-04-01	4.5630
2012-07-01	5.0618
2012-10-01	4.9287
2013-01-01	4.7230
2013-04-01	4.7659
2013-07-01	4.8636
2013-10-01	4.6369
2014-01-01	4.3726
2014-04-01	4.3473
2014-07-01	3.9422
2014-10-01	3.6056
2015-01-01	3.1502
2015-04-01	3.2864