Quarter	Billions of US Dollars
1989-07-01	0.4300
1989-10-01	0.2510
1990-01-01	0.4760
1990-04-01	0.4810
1990-07-01	0.6980
1990-10-01	0.6110
1991-01-01	1.0630
1991-04-01	0.7430
1991-07-01	0.5450
1991-10-01	0.5040
1992-01-01	0.6070
1992-04-01	0.5860
1992-07-01	0.2290
1992-10-01	0.4200
1993-01-01	0.5140
1993-04-01	0.2970
1993-07-01	0.1821
1993-10-01	0.1337
1994-01-01	0.9404
1994-04-01	1.3130
1994-07-01	1.3449
1994-10-01	1.8511
1995-01-01	2.0241
1995-04-01	2.7076
1995-07-01	2.6449
1995-10-01	2.1103
1996-01-01	4.2013
1996-04-01	5.0122
1996-07-01	5.0394
1996-10-01	4.5347
1997-01-01	5.5292
1997-04-01	3.5705
1997-07-01	4.6217
1997-10-01	4.9740
1998-01-01	5.8217
1998-04-01	5.2574
1998-07-01	5.7386
1998-10-01	3.4746
1999-01-01	2.4252
1999-04-01	2.2174
1999-07-01	2.4304
1999-10-01	3.9908
2000-01-01	4.5355
2000-04-01	5.2428
2000-07-01	3.9295
2000-10-01	5.1473
2001-01-01	6.6768
2001-04-01	18.2055
2001-07-01	20.9310
2001-10-01	13.5279
2002-01-01	7.7297
2002-04-01	8.8625
2002-07-01	9.2326
2002-10-01	7.0654
2003-01-01	6.3255
2003-04-01	7.0220
2003-07-01	5.2937
2003-10-01	5.3473
2004-01-01	4.7857
2004-04-01	4.2466
2004-07-01	3.9319
2004-10-01	4.7922
2005-01-01	4.6964
2005-04-01	4.4094
2005-07-01	4.0394
2005-10-01	4.0479
2006-01-01	4.1377
2006-04-01	5.2564
2006-07-01	5.3388
2006-10-01	7.0425
2007-01-01	12.5801
2007-04-01	12.6888
2007-07-01	12.7115
2007-10-01	16.1430
2008-01-01	18.5323
2008-04-01	19.1189
2008-07-01	16.5088
2008-10-01	5.8902
2009-01-01	6.2484
2009-04-01	7.7267
2009-07-01	5.8528
2009-10-01	3.9094
2010-01-01	5.2415
2010-04-01	4.7250
2010-07-01	6.9393
2010-10-01	5.4036
2011-01-01	3.5159
2011-04-01	4.9151
2011-07-01	5.2683
2011-10-01	4.7473
2012-01-01	3.2879
2012-04-01	3.2861
2012-07-01	2.9876
2012-10-01	2.8545
2013-01-01	2.3924
2013-04-01	1.4208
2013-07-01	1.8553
2013-10-01	1.4890
2014-01-01	1.5558
2014-04-01	1.2231
2014-07-01	1.1567
2014-10-01	0.6728
2015-01-01	0.6169
2015-04-01	0.3258