Quarter	Billions of US Dollars
1993-07-01	1.2245
1993-10-01	1.4343
1994-01-01	1.6166
1994-04-01	1.7371
1994-07-01	0.9336
1994-10-01	0.9096
1995-01-01	1.3426
1995-04-01	1.9440
1995-07-01	2.4543
1995-10-01	2.8162
1996-01-01	3.1492
1996-04-01	5.7166
1996-07-01	5.3387
1996-10-01	6.3465
1997-01-01	6.6236
1997-04-01	6.6972
1997-07-01	7.4236
1997-10-01	6.6895
1998-01-01	10.1145
1998-04-01	6.9919
1998-07-01	6.6764
1998-10-01	7.9637
1999-01-01	7.2138
1999-04-01	6.9968
1999-07-01	7.7372
1999-10-01	6.5335
2000-01-01	6.9928
2000-04-01	8.2713
2000-07-01	10.2100
2000-10-01	10.1372
2001-01-01	12.0913
2001-04-01	14.0642
2001-07-01	14.6017
2001-10-01	13.5138
2002-01-01	16.2546
2002-04-01	18.6142
2002-07-01	12.7510
2002-10-01	12.4955
2003-01-01	8.5161
2003-04-01	7.1011
2003-07-01	9.2692
2003-10-01	16.5513
2004-01-01	14.9289
2004-04-01	12.5476
2004-07-01	10.5096
2004-10-01	16.5827
2005-01-01	17.7826
2005-04-01	15.5037
2005-07-01	12.1668
2005-10-01	15.0521
2006-01-01	19.4792
2006-04-01	18.7694
2006-07-01	19.1491
2006-10-01	19.9425
2007-01-01	24.0344
2007-04-01	21.1227
2007-07-01	24.5276
2007-10-01	21.4446
2008-01-01	21.7548
2008-04-01	30.3479
2008-07-01	26.3144
2008-10-01	14.9675
2009-01-01	17.4116
2009-04-01	20.3342
2009-07-01	17.0446
2009-10-01	18.5954
2010-01-01	21.5828
2010-04-01	20.5872
2010-07-01	21.8738
2010-10-01	19.4502
2011-01-01	19.5048
2011-04-01	22.4220
2011-07-01	21.2615
2011-10-01	16.4772
2012-01-01	25.8551
2012-04-01	18.6755
2012-07-01	18.6245
2012-10-01	17.7330
2013-01-01	21.1454
2013-04-01	23.1338
2013-07-01	22.0818
2013-10-01	20.3129
2014-01-01	24.8035
2014-04-01	23.0023
2014-07-01	20.5899
2014-10-01	17.1017
2015-01-01	19.9730
2015-04-01	17.7855