Quarter	Billions of US Dollars
1987-01-01	0.4660
1987-04-01	0.2050
1987-07-01	0.3340
1987-10-01	0.3370
1988-01-01	0.3430
1988-04-01	0.3610
1988-07-01	0.2540
1988-10-01	0.2230
1989-01-01	0.1880
1989-04-01	0.1880
1989-07-01	0.3160
1989-10-01	0.2380
1990-01-01	0.2910
1990-04-01	0.4110
1990-07-01	0.6970
1990-10-01	1.5570
1991-01-01	0.2680
1991-04-01	0.3550
1991-07-01	0.4770
1991-10-01	1.0600
1992-01-01	0.7230
1992-04-01	0.8680
1992-07-01	1.9250
1992-10-01	2.2810
1993-01-01	2.5150
1993-04-01	3.9420
1993-07-01	9.0401
1993-10-01	9.2199
1994-01-01	10.2690
1994-04-01	9.3000
1994-07-01	9.4459
1994-10-01	8.4078
1995-01-01	4.0680
1995-04-01	3.3552
1995-07-01	4.7003
1995-10-01	5.1009
1996-01-01	6.0368
1996-04-01	7.6324
1996-07-01	5.9313
1996-10-01	5.8917
1997-01-01	5.3935
1997-04-01	4.8208
1997-07-01	6.4946
1997-10-01	6.0262
1998-01-01	8.8676
1998-04-01	9.0884
1998-07-01	6.1096
1998-10-01	5.0144
1999-01-01	3.2279
1999-04-01	4.0394
1999-07-01	4.0949
1999-10-01	4.8542
2000-01-01	5.0600
2000-04-01	5.2499
2000-07-01	4.8530
2000-10-01	3.8318
2001-01-01	3.9531
2001-04-01	3.7012
2001-07-01	2.6405
2001-10-01	3.4645
2002-01-01	3.0082
2002-04-01	2.5882
2002-07-01	1.9973
2002-10-01	2.2180
2003-01-01	4.0398
2003-04-01	4.3819
2003-07-01	5.0066
2003-10-01	3.5030
2004-01-01	2.7027
2004-04-01	1.9397
2004-07-01	1.8856
2004-10-01	2.0182
2005-01-01	2.1166
2005-04-01	2.0435
2005-07-01	2.0218
2005-10-01	1.9785
2006-01-01	2.1282
2006-04-01	2.4290
2006-07-01	2.3786
2006-10-01	2.3623
2007-01-01	1.0383
2007-04-01	1.4736
2007-07-01	0.7699
2007-10-01	1.5929
2008-01-01	1.5183
2008-04-01	2.0401
2008-07-01	2.2789
2008-10-01	1.4542
2009-01-01	1.4056
2009-04-01	0.9889
2009-07-01	1.4380
2009-10-01	1.2666
2010-01-01	1.2510
2010-04-01	1.2421
2010-07-01	1.6573
2010-10-01	1.8398
2011-01-01	2.0583
2011-04-01	1.8865
2011-07-01	1.2511
2011-10-01	1.1713
2012-01-01	1.5016
2012-04-01	1.5869
2012-07-01	1.8422
2012-10-01	2.5704
2013-01-01	2.7830
2013-04-01	2.2720
2013-07-01	1.4983
2013-10-01	1.0925
2014-01-01	0.6774
2014-04-01	0.3886
2014-07-01	0.5533
2014-10-01	0.4144
2015-01-01	0.3180
2015-04-01	0.3693