Quarter	Billions of US Dollars
1987-04-01	-0.0670
1988-07-01	0.1690
1988-10-01	0.1072
1989-01-01	0.0744
1989-04-01	0.2000
1989-07-01	0.1300
1989-10-01	0.1528
1990-04-01	0.2500
1990-07-01	0.7007
1990-10-01	0.6394
1991-01-01	-0.1644
1991-04-01	0.0785
1991-07-01	-0.0589
1992-04-01	-0.1669
1993-01-01	0.6160
1993-04-01	0.1000
1993-07-01	0.2193
1993-10-01	0.2923
1994-01-01	-0.0920
1994-04-01	0.1980
1994-07-01	-0.0785
1994-10-01	0.4166
1995-01-01	0.6084
1995-04-01	0.7574
1995-07-01	0.8041
1995-10-01	1.6912
1996-01-01	0.3313
1996-04-01	0.5397
1996-07-01	0.8311
1996-10-01	1.3006
1997-01-01	0.7678
1997-04-01	1.1172
1997-07-01	0.8250
1997-10-01	1.7253
1998-01-01	0.3148
1998-04-01	3.9515
1998-07-01	1.1699
1998-10-01	3.2687
1999-01-01	3.1187
1999-04-01	7.7203
1999-07-01	0.6594
1999-10-01	3.6483
2000-01-01	3.6715
2000-04-01	2.2669
2000-07-01	4.0079
2000-10-01	-0.2732
2001-01-01	2.4127
2001-04-01	3.0137
2001-07-01	1.8780
2001-10-01	4.1277
2002-01-01	-0.1434
2002-04-01	3.3425
2002-07-01	-0.6010
2002-10-01	2.2602
2003-01-01	5.3830
2003-04-01	3.8432
2003-07-01	4.2750
2003-10-01	14.7603
2004-01-01	2.0734
2004-04-01	6.2011
2004-07-01	1.4692
2004-10-01	13.9395
2005-01-01	4.6805
2005-04-01	16.3056
2005-07-01	10.6345
2005-10-01	19.7510
2006-01-01	23.1582
2006-04-01	32.0003
2006-07-01	9.1448
2006-10-01	24.0189
2007-01-01	44.4202
2007-04-01	37.9667
2007-07-01	15.2812
2007-10-01	25.3623
2008-01-01	13.6575
2008-04-01	43.9911
2008-07-01	14.5624
2008-10-01	50.7502
2009-01-01	26.2228
2009-04-01	17.0520
2009-07-01	23.1648
2009-10-01	13.0071
2010-01-01	5.2439
2010-04-01	0.6976
2010-07-01	10.1571
2010-10-01	-2.7484
2011-01-01	29.6262
2011-04-01	13.5426
2011-07-01	18.4375
2011-10-01	7.0892
2012-01-01	49.2596
2012-04-01	-6.8218
2012-07-01	3.8899
2012-10-01	25.4171
2013-01-01	1.5151
2013-04-01	2.1223
2013-07-01	-0.3527
2013-10-01	5.7225
2014-01-01	-18.4757
2014-04-01	-2.1721
2014-07-01	-14.3374
2014-10-01	-9.5290
2015-01-01	1.3852
2015-04-01	-9.2900