Quarter	Billions of US Dollars
1973-10-01	0.023593
1974-01-01	0.023812
1974-04-01	0.024004
1974-07-01	0.023823
1974-10-01	0.024168
1975-01-01	0.033250
1975-04-01	0.033236
1975-07-01	0.032139
1975-10-01	0.032296
1976-01-01	0.032397
1976-04-01	0.032271
1976-07-01	0.032669
1976-10-01	0.033107
1977-01-01	0.032940
1977-04-01	0.033055
1977-07-01	0.033118
1977-10-01	0.033918
1978-01-01	0.034470
1978-04-01	0.034593
1978-07-01	0.034921
1978-10-01	0.034952
1979-01-01	0.034455
1979-04-01	0.034438
1979-07-01	0.034432
1979-10-01	0.034784
1980-01-01	0.025357
1980-04-01	0.026216
1980-07-01	0.035906
1980-10-01	0.035502
1981-01-01	0.035226
1981-04-01	0.034551
1981-07-01	0.034402
1981-10-01	0.034574
1982-01-01	0.034155
1982-04-01	0.034067
1982-07-01	0.033762
1982-10-01	0.033947
1983-01-01	0.033664
1983-04-01	0.033603
1983-07-01	0.033798
1983-10-01	0.033627
1984-01-01	0.033627
1984-04-01	0.033485
1984-07-01	0.033105
1984-10-01	0.009700
1985-01-01	0.009700
1985-04-01	0.009700