Quarter	Billions of US Dollars
1993-07-01	0.0937
1993-10-01	-0.2626
1994-01-01	-0.6104
1994-04-01	0.3588
1994-07-01	-0.1979
1994-10-01	-0.5137
1995-01-01	0.2054
1995-04-01	0.0870
1995-07-01	0.0011
1995-10-01	-0.2112
1996-01-01	-0.9347
1996-04-01	-0.3702
1996-07-01	-0.1191
1996-10-01	-0.0907
1997-01-01	-0.3015
1997-04-01	-0.4009
1997-10-01	-0.3875
1998-01-01	-0.0304
1998-04-01	-0.1910
1998-10-01	-0.2672
1999-01-01	0.5852
1999-04-01	-0.5153
1999-07-01	-0.9384
1999-10-01	0.7767
2000-01-01	0.1449
2000-04-01	0.5612
2000-07-01	-2.0920
2000-10-01	0.2138
2001-01-01	-0.4568
2001-04-01	-0.7029
2001-07-01	1.4510
2001-10-01	3.4564
2002-01-01	-0.8799
2002-04-01	-0.7165
2002-07-01	-1.1427
2002-10-01	0.5705
2003-01-01	-0.6889
2003-04-01	0.5345
2003-07-01	-2.1086
2003-10-01	-1.7321
2004-01-01	-0.4139
2004-04-01	-1.3152
2004-07-01	-0.6469
2004-10-01	-0.2251
2005-01-01	-0.0520
2005-04-01	-0.1466
2006-01-01	0.0048
2006-04-01	-0.0050
2007-04-01	0.9666
2007-07-01	11.0846
2007-10-01	-11.3905
2008-01-01	6.0732
2008-04-01	0.4927
2008-07-01	10.3729
2008-10-01	10.1882
2009-01-01	-3.7910
2009-04-01	3.9191
2009-07-01	-9.5359
2009-10-01	-6.3484
2010-01-01	5.4985
2010-04-01	0.8495
2010-07-01	2.2603
2010-10-01	-4.7697
2011-01-01	-0.3210
2011-04-01	-0.0757
2011-07-01	0.0849
2011-10-01	-0.2648
2012-01-01	0.6695
2012-04-01	0.3226
2012-07-01	0.1474
2012-10-01	0.0839
2013-01-01	3.4485
2013-04-01	0.4256
2013-07-01	-1.3699
2013-10-01	-0.3362
2014-01-01	5.2326
2014-04-01	-0.2251
2014-07-01	1.3560
2014-10-01	0.8452
2015-01-01	0.8075
2015-04-01	-0.6868