Quarter	Billions of US Dollars
1993-07-01	8.9932
1993-10-01	7.4013
1994-01-01	6.1615
1994-04-01	5.9754
1994-07-01	8.1513
1994-10-01	8.3263
1995-01-01	8.2330
1995-04-01	7.8296
1995-07-01	3.8892
1995-10-01	4.3800
1996-01-01	4.0826
1996-04-01	4.7899
1996-07-01	5.7248
1996-10-01	6.5103
1997-01-01	6.0121
1997-04-01	5.3409
1997-07-01	3.7066
1997-10-01	1.6051
1998-01-01	2.1025
1998-04-01	2.1535
1998-07-01	2.6866
1998-10-01	5.3541
1999-01-01	5.9957
1999-04-01	6.4058
1999-07-01	6.6022
1999-10-01	4.8728
2000-01-01	4.4745
2000-04-01	4.3247
2000-07-01	6.4712
2000-10-01	5.3972
2001-01-01	4.7886
2001-04-01	5.7300
2001-07-01	4.2538
2001-10-01	5.7032
2002-01-01	6.3628
2002-04-01	6.7246
2002-07-01	6.2530
2002-10-01	6.8689
2003-01-01	7.4886
2003-04-01	7.9936
2003-07-01	8.1631
2003-10-01	7.2856
2004-01-01	7.9914
2004-04-01	9.0815
2004-07-01	8.8508
2004-10-01	10.7873
2005-01-01	9.0922
2005-04-01	6.1765
2005-07-01	5.3531
2005-10-01	5.2667
2006-01-01	6.0927
2006-04-01	7.7371
2006-07-01	9.8320
2006-10-01	7.2838
2007-01-01	7.1657
2007-04-01	6.1227
2007-07-01	7.8982
2007-10-01	7.3826
2008-01-01	9.2878
2008-04-01	9.6357
2008-07-01	9.3943
2008-10-01	12.5709
2009-01-01	10.3860
2009-04-01	16.4806
2009-07-01	19.0349
2009-10-01	16.8851
2010-01-01	17.7290
2010-04-01	14.9976
2010-07-01	15.0775
2010-10-01	18.1128
2011-01-01	18.4815
2011-04-01	18.6526
2011-07-01	20.6284
2011-10-01	22.9704
2012-01-01	20.9129
2012-04-01	18.1999
2012-07-01	17.4103
2012-10-01	14.2445
2013-01-01	15.0259
2013-04-01	16.9511
2013-07-01	16.6911
2013-10-01	15.1818
2014-01-01	19.2255
2014-04-01	25.1416
2014-07-01	28.4133
2014-10-01	26.7076
2015-01-01	27.9390
2015-04-01	26.2565