Quarter	Billions of US Dollars
1976-01-01	0.0171
1976-04-01	0.0470
1976-07-01	0.0472
1976-10-01	0.0824
1977-01-01	0.1219
1977-04-01	0.1220
1977-07-01	0.1287
1977-10-01	0.1303
1978-01-01	0.1315
1978-04-01	0.1616
1978-07-01	0.1637
1978-10-01	0.1634
1979-01-01	0.1626
1979-04-01	0.1886
1979-07-01	0.2482
1979-10-01	0.2478
1980-01-01	0.2390
1980-04-01	0.2475
1980-07-01	0.2464
1980-10-01	0.2421
1981-01-01	0.2373
1981-04-01	0.2034
1981-07-01	0.2047
1981-10-01	0.1748
1982-01-01	0.1704
1982-04-01	0.1661
1982-07-01	0.1574
1982-10-01	0.1610
1983-01-01	0.1589
1983-04-01	0.1584
1983-07-01	0.1581
1983-10-01	0.1570
1984-01-01	0.1575
1984-04-01	0.1361
1984-07-01	0.1343
1984-10-01	0.1332
1985-01-01	0.1332
1985-04-01	0.1335
1985-07-01	0.1371
1985-10-01	0.1129
1986-01-01	0.0996
1986-04-01	0.1012
1986-07-01	0.1033
1986-10-01	0.0850
1987-01-01	0.0877
1987-04-01	0.0595
1987-07-01	0.0575
1987-10-01	0.0625
1988-01-01	0.0605
1988-04-01	0.0549
1988-07-01	0.0536
1988-10-01	0.0550
1989-01-01	0.0253
1989-04-01	0.0251
1994-10-01	5.8396
1995-01-01	5.8396
1995-04-01	5.8396
1995-07-01	6.0896
1995-10-01	6.0896
1996-01-01	6.0896
1996-04-01	6.2696
1996-07-01	6.4334
1996-10-01	6.4804
1997-01-01	6.4686
1997-04-01	6.5890
1997-07-01	6.9843
1997-10-01	6.9802
1998-01-01	6.9775
1998-04-01	6.9796
1998-07-01	6.9887
1998-10-01	6.4959
1999-01-01	6.4651
1999-04-01	6.3097
1999-07-01	6.3123
1999-10-01	6.2518
2000-01-01	6.8171
2000-04-01	6.7569
2000-07-01	6.5563
2000-10-01	5.6612
2001-01-01	6.2816
2001-04-01	5.9045
2001-07-01	5.8944
2001-10-01	6.0554
2002-01-01	6.6691
2002-04-01	6.9508
2002-07-01	8.2971
2002-10-01	7.7743
2003-01-01	9.4980
2003-04-01	9.5415
2003-07-01	11.3987
2003-10-01	13.0562
2004-01-01	15.8371
2004-04-01	17.0794
2004-07-01	17.2853
2004-10-01	18.5108
2005-01-01	22.3963
2005-04-01	28.2130
2005-07-01	27.0346
2005-10-01	28.6606
2006-01-01	33.4173
2006-04-01	34.9838
2006-07-01	34.1872
2006-10-01	35.9562
2007-01-01	36.2648
2007-04-01	37.7490
2007-07-01	39.0736
2007-10-01	40.6474
2008-01-01	42.8197
2008-04-01	46.2801
2008-07-01	42.6474
2008-10-01	42.3501
2009-01-01	42.4722
2009-04-01	46.5197
2009-07-01	51.2833
2009-10-01	52.4277
2010-01-01	55.2882
2010-04-01	51.5936
2010-07-01	58.9866
2010-10-01	57.3822
2011-01-01	60.6190
2011-04-01	64.0163
2011-07-01	61.3925
2011-10-01	61.6446
2012-01-01	66.5041
2012-04-01	65.3406
2012-07-01	68.7804
2012-10-01	74.4353
2013-01-01	69.0014
2013-04-01	69.8244
2013-07-01	71.5146
2013-10-01	74.8155
2014-01-01	75.8681
2014-04-01	73.0920
2014-07-01	68.6953
2014-10-01	66.5106
2015-01-01	62.1371
2015-04-01	63.3146