Quarter	Billions of US Dollars
1993-07-01	0.1407
1993-10-01	-0.0420
1994-01-01	-0.0726
1994-04-01	0.0515
1994-07-01	0.0259
1994-10-01	0.0189
1995-01-01	0.3953
1995-04-01	-0.1927
1995-07-01	-0.0544
1995-10-01	0.0906
1996-01-01	1.6018
1996-04-01	0.0310
1996-07-01	-0.0616
1996-10-01	-0.1925
1997-01-01	1.2394
1997-04-01	1.6550
1997-07-01	1.7785
1997-10-01	0.2705
1998-01-01	0.9639
1998-04-01	0.7620
1998-07-01	3.3634
1998-10-01	-0.1390
1999-01-01	4.6914
1999-04-01	1.0837
1999-07-01	-0.3299
1999-10-01	2.7165
2000-01-01	0.7097
2000-04-01	2.8198
2000-07-01	-1.6087
2000-10-01	3.1919
2001-01-01	2.6329
2001-04-01	3.6219
2001-07-01	-2.6526
2001-10-01	3.8946
2002-01-01	1.6053
2002-04-01	-0.4176
2002-07-01	-1.3419
2002-10-01	0.5884
2003-01-01	4.1750
2003-04-01	3.3406
2003-07-01	-3.7317
2003-10-01	0.8088
2004-01-01	8.5412
2004-04-01	-0.2910
2004-07-01	5.6717
2004-10-01	11.9733
2005-01-01	5.2573
2005-04-01	1.7735
2005-07-01	5.6281
2005-10-01	10.9956
2006-01-01	3.3623
2006-04-01	-3.5638
2006-07-01	7.6598
2006-10-01	8.9474
2007-01-01	20.2750
2007-04-01	-1.8935
2007-07-01	8.0703
2007-10-01	-10.6249
2008-01-01	6.8370
2008-04-01	9.3971
2008-07-01	-0.0278
2008-10-01	-22.1008
2009-01-01	-9.0663
2009-04-01	-12.2468
2009-07-01	6.8395
2009-10-01	-13.5651
2010-01-01	-6.1392
2010-04-01	-1.3214
2010-07-01	-5.9992
2010-10-01	-0.6529
2011-01-01	-27.6362
2011-04-01	-5.9735
2011-07-01	-7.2889
2011-10-01	1.2276
2012-01-01	33.6073
2012-04-01	11.5102
2012-07-01	-12.7019
2012-10-01	3.5871
2013-01-01	-3.7921
2013-04-01	-6.7921
2013-07-01	-1.3510
2013-10-01	-5.8614
2014-01-01	-34.6174
2014-04-01	0.0235
2014-07-01	2.8907
2014-10-01	1.3531
2015-01-01	0.1893
2015-04-01	-0.3267