Quarter	Billions of US Dollars
1992-07-01	0.0813
1992-10-01	0.0937
1993-01-01	0.0919
1993-04-01	0.0912
1993-07-01	0.0955
1993-10-01	0.0926
1994-01-01	0.1459
1994-04-01	0.1494
1994-07-01	0.1528
1994-10-01	0.1512
1995-01-01	0.1628
1995-04-01	0.2591
1995-07-01	0.5124
1995-10-01	0.5451
1996-01-01	0.6786
1996-04-01	1.2482
1996-07-01	1.7673
1996-10-01	2.6922
1997-01-01	2.8499
1997-04-01	2.6255
1997-07-01	3.0573
1997-10-01	2.9472
1998-01-01	2.8650
1998-04-01	3.3197
1998-07-01	3.1567
1998-10-01	3.4615
1999-01-01	3.6342
1999-04-01	3.4741
1999-07-01	3.2226
1999-10-01	2.9262
2000-01-01	3.4196
2000-04-01	3.1280
2000-07-01	3.4603
2000-10-01	4.5423
2001-01-01	4.2967
2001-04-01	4.1259
2001-07-01	5.1810
2001-10-01	6.2436
2002-01-01	6.0126
2002-04-01	7.2486
2002-07-01	9.7285
2002-10-01	12.3788
2003-01-01	12.2365
2003-04-01	12.4879
2003-07-01	13.3098
2003-10-01	14.2219
2004-01-01	13.8109
2004-04-01	13.4197
2004-07-01	13.5741
2004-10-01	13.5459
2005-01-01	14.0423
2005-04-01	14.6015
2005-07-01	13.8870
2005-10-01	14.6500
2006-01-01	15.9528
2006-04-01	16.6717
2006-07-01	17.3853
2006-10-01	18.7127
2007-01-01	19.5017
2007-04-01	20.6916
2007-07-01	21.0925
2007-10-01	20.6059
2008-01-01	21.4171
2008-04-01	23.8901
2008-07-01	23.3456
2008-10-01	21.7856
2009-01-01	20.8703
2009-04-01	20.6391
2009-07-01	22.5484
2009-10-01	21.2559
2010-01-01	19.6767
2010-04-01	18.7844
2010-07-01	19.2921
2010-10-01	19.1964
2011-01-01	20.5557
2011-04-01	20.3771
2011-07-01	20.3146
2011-10-01	20.1791
2012-01-01	19.8699
2012-04-01	19.8387
2012-07-01	19.7758
2012-10-01	20.1384
2013-01-01	20.6123
2013-04-01	20.4455
2013-07-01	20.2084
2013-10-01	19.8786
2014-01-01	20.9922
2014-04-01	20.4114
2014-07-01	19.0062
2014-10-01	20.3848
2015-01-01	19.9011
2015-04-01	19.8750