Quarter	Billions of US Dollars
1993-07-01	1.3634
1993-10-01	1.7631
1994-01-01	1.8966
1994-04-01	1.2112
1994-07-01	1.5560
1994-10-01	1.2713
1995-01-01	1.6676
1995-04-01	1.1708
1995-07-01	1.1054
1995-10-01	1.4330
1996-01-01	1.5985
1996-04-01	2.6689
1996-07-01	2.1143
1996-10-01	1.6789
1997-01-01	2.3304
1997-04-01	3.2393
1997-07-01	2.2497
1997-10-01	3.8437
1998-01-01	4.1835
1998-04-01	4.1792
1998-07-01	4.9135
1998-10-01	4.6198
1999-01-01	4.5750
1999-04-01	4.8179
1999-07-01	4.0434
1999-10-01	2.7381
2000-01-01	3.3687
2000-04-01	3.5085
2000-07-01	3.1781
2000-10-01	4.0990
2001-01-01	2.8766
2001-04-01	3.0842
2001-07-01	2.8055
2001-10-01	3.1810
2002-01-01	4.1306
2002-04-01	3.0040
2002-07-01	3.7051
2002-10-01	4.3870
2003-01-01	4.6603
2003-04-01	3.7027
2003-07-01	2.5888
2003-10-01	2.6776
2004-01-01	3.4884
2004-04-01	3.2534
2004-07-01	3.4031
2004-10-01	3.4817
2005-01-01	4.1114
2005-04-01	3.2028
2005-07-01	2.6873
2005-10-01	2.5517
2006-01-01	1.8633
2006-04-01	3.2749
2006-07-01	3.6161
2006-10-01	3.8298
2007-01-01	4.3865
2007-04-01	5.7911
2007-07-01	3.3717
2007-10-01	3.1528
2008-01-01	3.6741
2008-04-01	3.9403
2008-07-01	3.6006
2008-10-01	3.7593
2009-01-01	2.9948
2009-04-01	6.2837
2009-07-01	5.2206
2009-10-01	4.9916
2010-01-01	5.2108
2010-04-01	5.0327
2010-07-01	4.3762
2010-10-01	3.1912
2011-01-01	3.2818
2011-04-01	3.0802
2011-07-01	3.7654
2011-10-01	3.4623
2012-01-01	4.4371
2012-04-01	4.1679
2012-07-01	2.8183
2012-10-01	3.0235
2013-01-01	2.6579
2013-04-01	2.5884
2013-07-01	5.4086
2013-10-01	9.3673
2014-01-01	8.1198
2014-04-01	10.0333
2014-07-01	8.4138
2014-10-01	7.4316
2015-01-01	6.2683
2015-04-01	7.3682