Quarter	Billions of US Dollars
1993-04-01	0.0710
1993-07-01	1.9062
1993-10-01	2.3518
1994-01-01	2.9167
1994-04-01	3.6776
1994-07-01	4.6546
1994-10-01	4.3086
1995-01-01	6.0557
1995-04-01	6.1655
1995-07-01	6.6368
1995-10-01	8.7453
1996-01-01	9.1533
1996-04-01	9.4594
1996-07-01	10.1238
1996-10-01	10.8483
1997-01-01	9.9231
1997-04-01	10.5412
1997-07-01	9.9874
1997-10-01	9.6826
1998-01-01	8.9601
1998-04-01	8.0132
1998-07-01	7.8806
1998-10-01	9.1428
1999-01-01	9.7317
1999-04-01	8.2066
1999-07-01	8.8859
1999-10-01	7.2638
2000-01-01	8.8488
2000-04-01	8.1265
2000-07-01	8.3563
2000-10-01	8.9286
2001-01-01	9.7464
2001-04-01	8.7574
2001-07-01	10.3005
2001-10-01	11.6247
2002-01-01	11.3003
2002-04-01	12.1576
2002-07-01	13.2577
2002-10-01	15.5882
2003-01-01	18.0048
2003-04-01	17.6411
2003-07-01	17.9028
2003-10-01	20.9994
2004-01-01	18.6414
2004-04-01	16.7992
2004-07-01	16.8951
2004-10-01	14.5365
2005-01-01	14.4956
2005-04-01	16.3077
2005-07-01	16.8330
2005-10-01	16.3091
2006-01-01	16.7376
2006-04-01	18.8320
2006-07-01	18.5927
2006-10-01	19.9879
2007-01-01	22.0709
2007-04-01	23.3853
2007-07-01	24.2531
2007-10-01	27.0469
2008-01-01	30.0092
2008-04-01	29.3791
2008-07-01	27.8488
2008-10-01	23.9910
2009-01-01	24.3089
2009-04-01	19.8865
2009-07-01	22.8438
2009-10-01	20.5781
2010-01-01	17.9412
2010-04-01	18.0681
2010-07-01	17.7061
2010-10-01	14.7531
2011-01-01	13.4143
2011-04-01	17.5943
2011-07-01	13.5194
2011-10-01	12.6068
2012-01-01	16.6256
2012-04-01	12.1352
2012-07-01	10.1985
2012-10-01	9.1169
2013-01-01	7.2293
2013-04-01	7.2002
2013-07-01	7.7017
2013-10-01	8.0461
2014-01-01	7.6382
2014-04-01	7.6436
2014-07-01	5.5857
2014-10-01	4.9682
2015-01-01	3.7305
2015-04-01	4.4060