Quarter	Billions of US Dollars
1993-07-01	8.2200
1993-10-01	7.7880
1994-01-01	7.1335
1994-04-01	3.3256
1994-07-01	6.4969
1994-10-01	4.4004
1995-01-01	6.0050
1995-04-01	6.3609
1995-07-01	10.0851
1995-10-01	7.1027
1996-01-01	10.3652
1996-04-01	6.8600
1996-07-01	8.2798
1996-10-01	4.7871
1997-01-01	7.1956
1997-04-01	5.7023
1997-07-01	4.9511
1997-10-01	5.2310
1998-01-01	10.3944
1998-04-01	7.9883
1998-07-01	7.6240
1998-10-01	5.3940
1999-01-01	9.2273
1999-04-01	6.1021
1999-07-01	5.9935
1999-10-01	3.7592
2000-01-01	6.2839
2000-04-01	5.4342
2000-07-01	7.8777
2000-10-01	3.5614
2001-01-01	6.7554
2001-04-01	5.3814
2001-07-01	3.4036
2001-10-01	5.8782
2002-01-01	8.3336
2002-04-01	9.3713
2002-07-01	3.9688
2002-10-01	8.5008
2003-01-01	9.3731
2003-04-01	10.3079
2003-07-01	10.8684
2003-10-01	11.0488
2004-01-01	11.9308
2004-04-01	7.8423
2004-07-01	10.6921
2004-10-01	6.2861
2005-01-01	18.1846
2005-04-01	16.1661
2005-07-01	11.9651
2005-10-01	14.3899
2006-01-01	24.0754
2006-04-01	17.4144
2006-07-01	12.7232
2006-10-01	15.7509
2007-01-01	23.4663
2007-04-01	18.3408
2007-07-01	11.6294
2007-10-01	11.8061
2008-01-01	17.5954
2008-04-01	19.0333
2008-07-01	13.2459
2008-10-01	13.5332
2009-01-01	29.8287
2009-04-01	17.9485
2009-07-01	13.6807
2009-10-01	10.4317
2010-01-01	21.6911
2010-04-01	11.0659
2010-07-01	15.5953
2010-10-01	9.8585
2011-01-01	20.9552
2011-04-01	11.6230
2011-07-01	9.8711
2011-10-01	6.2614
2012-01-01	19.2837
2012-04-01	8.2007
2012-07-01	18.9031
2012-10-01	8.2556
2013-01-01	8.6513
2013-04-01	9.0529
2013-07-01	6.8128
2013-10-01	6.8934
2014-01-01	13.3240
2014-04-01	10.3300
2014-07-01	9.5255
2014-10-01	4.8518
2015-01-01	7.9760
2015-04-01	6.9364