Quarter	Billions of US Dollars
1960-01-01	3.006
1960-04-01	3.148
1960-07-01	3.307
1960-10-01	3.482
1961-01-01	3.662
1961-04-01	3.853
1961-07-01	4.024
1961-10-01	4.161
1962-01-01	4.262
1962-04-01	4.396
1962-07-01	4.652
1962-10-01	5.115
1963-01-01	5.810
1963-04-01	6.652
1963-07-01	7.482
1963-10-01	8.167
1964-01-01	8.532
1964-04-01	8.725
1964-07-01	8.811
1964-10-01	8.896
1965-01-01	9.049
1965-04-01	9.276
1965-07-01	9.547
1965-10-01	9.855
1966-01-01	10.155
1966-04-01	10.471
1966-07-01	10.798
1966-10-01	11.140
1967-01-01	11.510
1967-04-01	11.924
1967-07-01	12.395
1967-10-01	12.867
1968-01-01	13.379
1968-04-01	13.960
1968-07-01	14.507
1968-10-01	14.974
1969-01-01	15.302
1969-04-01	15.758
1969-07-01	16.107
1969-10-01	16.643
1970-01-01	17.054
1970-04-01	17.619
1970-07-01	18.440
1970-10-01	19.188
1971-01-01	20.041
1971-04-01	20.848
1971-07-01	22.097
1971-10-01	23.545
1972-01-01	24.704
1972-04-01	25.550
1972-07-01	26.701
1972-10-01	28.589
1973-01-01	31.348
1973-04-01	34.303
1973-07-01	38.504
1973-10-01	37.649
1974-01-01	37.451
1974-04-01	35.979
1974-07-01	35.103
1974-10-01	36.111
1975-01-01	38.829
1975-04-01	41.295
1975-07-01	40.244
1975-10-01	42.448
1976-01-01	35.234
1976-04-01	34.798
1976-07-01	35.035
1976-10-01	36.055
1977-01-01	37.072
1977-04-01	37.862
1977-07-01	38.728
1977-10-01	40.777
1978-01-01	40.839
1978-04-01	40.956
1978-07-01	44.815
1978-10-01	48.745
1979-01-01	48.546
1979-04-01	49.529
1979-07-01	53.555
1979-10-01	59.418
1980-01-01	54.827
1980-04-01	63.078
1980-07-01	62.121
1980-10-01	65.211
1981-01-01	58.340
1981-04-01	51.730
1981-07-01	52.526
1981-10-01	55.306
1982-01-01	49.829
1982-04-01	48.269
1982-07-01	48.743
1982-10-01	55.480
1983-01-01	53.052
1983-04-01	51.536
1983-07-01	49.526
1983-10-01	52.851
1984-01-01	55.197
1984-04-01	53.677
1984-07-01	50.807
1984-10-01	52.823
1985-01-01	54.182
1985-04-01	56.691
1985-07-01	62.945
1985-10-01	77.236
1986-01-01	80.949
1986-04-01	89.542
1986-07-01	100.657
1986-10-01	117.773
1987-01-01	124.904
1987-04-01	126.614
1987-07-01	125.362
1987-10-01	157.677
1988-01-01	150.657
1988-04-01	146.675
1988-07-01	144.713
1988-10-01	171.433
1989-01-01	156.440
1989-04-01	155.599
1989-07-01	154.255
1989-10-01	176.565
1990-01-01	177.627
1990-04-01	187.694
1990-07-01	194.369
1990-10-01	227.958
1991-01-01	195.587
1991-04-01	196.197
1991-07-01	214.236
1991-10-01	254.262
1992-01-01	233.796
1992-04-01	258.063
1992-07-01	241.777
1992-10-01	213.296
1993-01-01	195.403
1993-04-01	204.897
1993-07-01	195.185
1993-10-01	188.159
1994-01-01	193.506
1994-04-01	200.124
1994-07-01	201.665
1994-10-01	205.250
1995-01-01	184.392
1995-04-01	199.218
1995-07-01	201.351
1995-10-01	210.341
1996-01-01	214.745
1996-04-01	223.533
1996-07-01	225.120
1996-10-01	232.153
1997-01-01	213.014
1997-04-01	215.606
1997-07-01	213.538
1997-10-01	214.715
1998-01-01	209.876
1998-04-01	225.171
1998-07-01	241.462
1998-10-01	248.323
1999-01-01	238.100
1999-04-01	237.317
1999-07-01	251.652
1999-10-01	248.469
2000-01-01	245.374
2000-04-01	251.305
2000-07-01	234.249
2000-10-01	261.614
2001-01-01	253.991
2001-04-01	253.147
2001-07-01	277.107
2001-10-01	274.862
2002-01-01	278.077
2002-04-01	328.153
2002-07-01	330.686
2002-10-01	362.805
2003-01-01	383.009
2003-04-01	413.682
2003-07-01	429.888
2003-10-01	482.065
2004-01-01	477.403
2004-04-01	492.619
2004-07-01	516.052
2004-10-01	589.245
2005-01-01	576.138
2005-04-01	558.010
2005-07-01	569.796
2005-10-01	579.277
2006-01-01	611.854
2006-04-01	664.600
2006-07-01	677.534
2006-10-01	729.208
2007-01-01	759.638
2007-04-01	794.143
2007-07-01	850.362
2007-10-01	904.864
2008-01-01	982.658
2008-04-01	997.142
2008-07-01	909.655
2008-10-01	888.029
2009-01-01	856.260
2009-04-01	928.458
2009-07-01	966.844
2009-10-01	962.550
2010-01-01	912.318
2010-04-01	843.603
2010-07-01	947.067
2010-10-01	935.438
2011-01-01	1003.097
2011-04-01	1031.302
2011-07-01	968.461
2011-10-01	928.023
2012-01-01	952.793
2012-04-01	897.482
2012-07-01	918.203
2012-10-01	935.763
2013-01-01	903.122
2013-04-01	919.116
2013-07-01	944.101
2013-10-01	961.902
2014-01-01	957.827
2014-04-01	950.885
2014-07-01	870.594
2014-10-01	840.720
2015-01-01	743.322
2015-04-01	773.848
2015-07-01	774.942
2015-10-01	753.360
2016-01-01	787.659
2016-04-01	770.049
2016-07-01	776.137
2016-10-01	735.306
2017-01-01	749.080
2017-04-01	800.329
2017-07-01	829.736
2017-10-01	850.744
2018-01-01	871.360