Quarter	Billions of US Dollars
1987-01-01	0.4366
1987-04-01	0.3108
1987-07-01	0.2973
1987-10-01	0.3070
1988-01-01	0.2845
1988-04-01	0.2808
1988-07-01	0.2790
1988-10-01	0.2109
1989-01-01	0.1750
1989-04-01	0.1750
1989-07-01	0.1750
1989-10-01	0.4300
1990-01-01	0.4300
1990-04-01	0.4475
1990-07-01	0.4579
1990-10-01	0.4590
1991-01-01	0.4455
1991-04-01	0.3491
1991-07-01	0.3513
1991-10-01	0.3538
1992-01-01	0.3724
1992-04-01	0.3760
1992-07-01	0.3800
1992-10-01	0.3732
1993-01-01	0.3731
1993-04-01	0.3710
1993-07-01	0.9264
1993-10-01	0.9251
1994-01-01	0.9270
1994-04-01	1.1023
1994-07-01	1.1099
1994-10-01	1.0738
1995-01-01	1.5807
1995-04-01	1.6373
1995-07-01	1.6279
1995-10-01	1.7813
1996-01-01	1.7827
1996-04-01	2.0421
1996-07-01	2.1346
1996-10-01	2.1965
1997-01-01	2.1132
1997-04-01	2.0842
1997-07-01	2.1198
1997-10-01	2.1442
1998-01-01	2.1146
1998-04-01	2.2125
1998-07-01	2.3028
1998-10-01	2.2364
1999-01-01	2.1427
1999-04-01	2.0971
1999-07-01	1.9515
1999-10-01	2.1388
2000-01-01	2.0565
2000-04-01	2.4639
2000-07-01	2.5058
2000-10-01	4.8239
2001-01-01	5.5742
2001-04-01	5.8749
2001-07-01	7.8355
2001-10-01	11.3651
2002-01-01	12.3087
2002-04-01	16.7154
2002-07-01	17.6592
2002-10-01	20.7777
2003-01-01	22.6232
2003-04-01	24.3577
2003-07-01	26.8006
2003-10-01	33.3392
2004-01-01	33.7511
2004-04-01	35.6671
2004-07-01	37.0177
2004-10-01	42.7943
2005-01-01	42.6655
2005-04-01	43.5246
2005-07-01	47.1513
2005-10-01	50.8031
2006-01-01	53.3586
2006-04-01	60.5131
2006-07-01	70.0010
2006-10-01	73.5457
2007-01-01	69.1878
2007-04-01	68.3191
2007-07-01	72.1654
2007-10-01	73.6125
2008-01-01	79.3481
2008-04-01	80.7455
2008-07-01	74.3213
2008-10-01	77.9613
2009-01-01	67.0623
2009-04-01	67.0279
2009-07-01	66.6446
2009-10-01	63.3535
2010-01-01	57.3319
2010-04-01	49.6922
2010-07-01	52.2244
2010-10-01	50.2257
2011-01-01	50.8283
2011-04-01	51.1722
2011-07-01	47.0410
2011-10-01	46.8217
2012-01-01	46.5465
2012-04-01	42.2718
2012-07-01	39.2101
2012-10-01	36.6311
2013-01-01	38.8798
2013-04-01	48.6701
2013-07-01	54.6779
2013-10-01	62.9519
2014-01-01	70.8021
2014-04-01	73.9313
2014-07-01	74.3236
2014-10-01	74.7022
2015-01-01	76.8449
2015-04-01	86.9512