Quarter	Billions of US Dollars
1993-07-01	0.9303
1993-10-01	0.9400
1994-01-01	1.3371
1994-04-01	1.0606
1994-07-01	1.2960
1994-10-01	1.9320
1995-01-01	1.4512
1995-04-01	2.6152
1995-07-01	1.3064
1995-10-01	1.8299
1996-01-01	1.4339
1996-04-01	1.2886
1996-07-01	1.0433
1996-10-01	1.8710
1997-01-01	1.7592
1997-04-01	1.4979
1997-07-01	1.9544
1997-10-01	2.4974
1998-01-01	2.4811
1998-04-01	3.0457
1998-07-01	2.8331
1998-10-01	1.9858
1999-01-01	3.8355
1999-04-01	3.6460
1999-07-01	3.9551
1999-10-01	3.9114
2000-01-01	4.0800
2000-04-01	4.7978
2000-07-01	3.7627
2000-10-01	4.9552
2001-01-01	4.3011
2001-04-01	3.2702
2001-07-01	2.1531
2001-10-01	4.3308
2002-01-01	2.6578
2002-04-01	3.5762
2002-07-01	4.7744
2002-10-01	4.7507
2003-01-01	4.7264
2003-04-01	4.1367
2003-07-01	3.4869
2003-10-01	5.7970
2004-01-01	4.8867
2004-04-01	3.0662
2004-07-01	4.1053
2004-10-01	6.0745
2005-01-01	9.4515
2005-04-01	8.0556
2005-07-01	8.5181
2005-10-01	8.2744
2006-01-01	10.4399
2006-04-01	10.8666
2006-07-01	10.0288
2006-10-01	10.0409
2007-01-01	14.5345
2007-04-01	16.4128
2007-07-01	15.3587
2007-10-01	14.8286
2008-01-01	17.4606
2008-04-01	9.8001
2008-07-01	14.2417
2008-10-01	16.8072
2009-01-01	6.1194
2009-04-01	3.5701
2009-07-01	3.8151
2009-10-01	6.1908
2010-01-01	5.4009
2010-04-01	8.5514
2010-07-01	4.5046
2010-10-01	10.1268
2011-01-01	15.5525
2011-04-01	12.6840
2011-07-01	21.9127
2011-10-01	20.9693
2012-01-01	14.4218
2012-04-01	15.4016
2012-07-01	11.7278
2012-10-01	16.2974
2013-01-01	3.3831
2013-04-01	10.8150
2013-07-01	6.4820
2013-10-01	7.4599
2014-01-01	9.7181
2014-04-01	7.5926
2014-07-01	11.0597
2014-10-01	19.5106
2015-01-01	24.8029
2015-04-01	18.4807