Quarter	Billions of US Dollars
1972-10-01	0.0500
1973-01-01	0.0500
1973-04-01	0.0500
1973-07-01	0.0500
1973-10-01	0.0500
1974-01-01	0.0500
1974-04-01	0.0671
1974-07-01	0.0670
1974-10-01	0.0673
1975-01-01	0.0675
1975-04-01	0.0675
1975-07-01	0.0669
1975-10-01	0.0670
1976-01-01	0.0671
1976-04-01	0.0670
1976-07-01	0.4344
1976-10-01	0.4459
1977-01-01	0.4836
1977-04-01	0.5211
1977-07-01	0.5648
1977-10-01	0.5738
1978-01-01	0.6970
1978-04-01	0.7043
1978-07-01	0.7474
1978-10-01	0.8273
1979-01-01	0.8392
1979-04-01	0.8621
1979-07-01	0.9644
1979-10-01	0.9501
1980-01-01	0.9245
1980-04-01	0.9699
1980-07-01	1.0426
1980-10-01	1.0456
1981-01-01	1.0238
1981-04-01	0.9895
1981-07-01	0.9839
1981-10-01	1.0614
1982-01-01	1.0436
1982-04-01	1.0303
1982-07-01	1.0088
1982-10-01	1.0597
1983-01-01	1.0331
1983-04-01	1.0286
1983-07-01	1.0307
1983-10-01	1.0333
1984-01-01	1.0276
1984-04-01	1.0011
1984-07-01	0.9495
1984-10-01	0.9399
1985-01-01	0.9062
1985-04-01	0.9112
1985-07-01	0.9624
1985-10-01	0.9361
1986-01-01	0.9644
1986-04-01	1.0016
1986-07-01	0.9361
1986-10-01	0.8351
1987-01-01	0.8706
1987-04-01	0.7991
1987-07-01	0.7879
1987-10-01	0.8543
1988-01-01	0.7383
1988-04-01	0.7203
1988-07-01	0.6822
1988-10-01	0.6525
1989-01-01	0.5829
1989-04-01	0.5595
1989-07-01	0.4983
1989-10-01	0.4906
1990-01-01	0.4681
1990-04-01	1.3116
1990-07-01	1.2510
1990-10-01	1.2556
1991-01-01	1.2469
1991-04-01	1.2509
1991-07-01	1.2578
1991-10-01	1.1495
1992-01-01	0.9375
1992-04-01	0.9421
1992-07-01	0.9463
1992-10-01	4.2908
1993-01-01	4.4466
1993-04-01	4.4543
1993-07-01	4.7307
1993-10-01	5.1652
1994-01-01	5.2255
1994-04-01	5.6377
1994-07-01	5.9807
1994-10-01	6.3144
1995-01-01	6.3193
1995-04-01	6.1994
1995-07-01	6.6000
1995-10-01	6.7620
1996-01-01	6.7758
1996-04-01	7.3797
1996-07-01	7.9561
1996-10-01	9.6310
1997-01-01	10.5526
1997-04-01	11.4325
1997-07-01	12.5836
1997-10-01	12.2416
1998-01-01	13.0462
1998-04-01	13.7670
1998-07-01	13.3907
1998-10-01	12.9952
1999-01-01	14.1552
1999-04-01	14.8869
1999-07-01	15.7555
1999-10-01	16.1241
2000-01-01	17.6472
2000-04-01	17.3349
2000-07-01	17.4504
2000-10-01	17.0846
2001-01-01	16.1072
2001-04-01	16.3609
2001-07-01	16.2452
2001-10-01	17.3166
2002-01-01	18.9356
2002-04-01	20.0322
2002-07-01	20.4446
2002-10-01	21.4791
2003-01-01	22.3988
2003-04-01	23.2709
2003-07-01	23.9210
2003-10-01	25.4863
2004-01-01	25.8632
2004-04-01	25.9323
2004-07-01	26.8857
2004-10-01	26.9663
2005-01-01	28.3643
2005-04-01	28.9010
2005-07-01	29.8041
2005-10-01	28.6075
2006-01-01	31.1861
2006-04-01	30.7835
2006-07-01	32.1466
2006-10-01	31.4322
2007-01-01	32.9190
2007-04-01	32.8063
2007-07-01	32.5583
2007-10-01	32.2116
2008-01-01	33.0903
2008-04-01	31.5668
2008-07-01	31.5803
2008-10-01	31.4681
2009-01-01	31.8497
2009-04-01	32.8117
2009-07-01	34.2191
2009-10-01	35.8819
2010-01-01	36.8280
2010-04-01	36.8668
2010-07-01	37.8027
2010-10-01	38.9491
2011-01-01	40.9624
2011-04-01	42.1261
2011-07-01	41.8176
2011-10-01	40.7838
2012-01-01	43.2304
2012-04-01	43.6643
2012-07-01	43.6593
2012-10-01	44.6282
2013-01-01	43.8469
2013-04-01	45.4340
2013-07-01	44.8634
2013-10-01	45.1635
2014-01-01	44.9587
2014-04-01	45.6463
2014-07-01	45.0034
2014-10-01	44.8592
2015-01-01	47.1119
2015-04-01	47.0498