Quarter	Billions of US Dollars
1993-07-01	-0.03243
1993-10-01	-0.03199
1994-01-01	-0.10420
1994-04-01	-0.03364
1994-07-01	-0.09011
1994-10-01	-0.03589
1995-01-01	-0.05289
1995-04-01	0.07511
1995-07-01	-0.00167
1995-10-01	0.00166
1996-01-01	0.14502
1996-04-01	0.26125
1996-07-01	1.29230
1996-10-01	1.25480
1997-01-01	0.99106
1997-04-01	1.36669
1997-07-01	2.24177
1997-10-01	1.03690
1998-01-01	1.11350
1998-04-01	0.75191
1998-07-01	0.36371
1998-10-01	0.76380
1999-01-01	0.45886
1999-04-01	0.00976
1999-07-01	-0.14108
1999-10-01	-0.24842
2000-01-01	0.17409
2000-04-01	-0.64677
2000-07-01	-1.06536
2000-10-01	-0.16537
2001-01-01	-0.00919
2001-04-01	-0.46191
2001-07-01	-0.14466
2001-10-01	-0.15700
2002-01-01	-0.49631
2002-04-01	-0.10939
2002-07-01	-0.11909
2002-10-01	0.43398
2003-01-01	1.48710
2003-04-01	0.38160
2003-07-01	0.67575
2003-10-01	0.07409
2004-01-01	1.63968
2004-04-01	0.34112
2004-07-01	1.10765
2004-10-01	1.80271
2005-01-01	3.00495
2005-04-01	3.04102
2005-07-01	5.96483
2005-10-01	7.43962
2006-01-01	3.66433
2006-04-01	0.55881
2006-07-01	0.39813
2006-10-01	-0.43329
2007-01-01	2.72231
2007-04-01	3.55232
2007-07-01	-0.53035
2007-10-01	-1.20381
2008-01-01	3.05532
2008-04-01	1.49793
2008-07-01	-1.21259
2008-10-01	-1.84952
2009-01-01	-1.62772
2009-04-01	-0.93484
2009-07-01	-3.17480
2009-10-01	-0.03128
2010-01-01	-2.53348
2010-04-01	-1.40250
2010-07-01	-1.03419
2010-10-01	-2.30170
2011-01-01	-1.54238
2011-04-01	-0.26155
2011-07-01	-0.18109
2011-10-01	-0.18739
2012-01-01	-1.03759
2012-04-01	-0.48245
2012-07-01	-0.38228
2012-10-01	-0.43109
2013-01-01	3.31771
2013-04-01	1.00639
2013-07-01	0.48847
2013-10-01	1.02399
2014-01-01	2.15208
2014-04-01	1.90266
2014-07-01	1.11045
2014-10-01	0.65179
2015-01-01	1.67821
2015-04-01	0.65306