Quarter Billions of US Dollars 1972-10-01 0.030 1973-01-01 0.060 1973-04-01 0.060 1973-07-01 0.060 1973-10-01 0.060 1974-01-01 0.060 1974-04-01 0.060 1974-07-01 0.060 1974-10-01 0.060 1975-01-01 0.060 1975-04-01 0.060 1975-07-01 0.060 1975-10-01 0.060 1976-01-01 0.060 1976-04-01 0.060 1976-07-01 0.060 1976-10-01 0.060 1977-01-01 0.060 1977-04-01 0.060 1977-07-01 0.060 1977-10-01 0.060 1978-01-01 0.060 1978-04-01 0.060 1978-07-01 0.060 1978-10-01 0.060 1979-01-01 0.060 1979-04-01 0.060 1979-07-01 0.060 1979-10-01 0.060 1980-01-01 0.060 1980-04-01 0.060 1980-07-01 0.060 1980-10-01 0.060 1981-01-01 0.060 1981-04-01 0.060 1981-07-01 0.060 1981-10-01 0.060 1982-01-01 0.060 1982-04-01 0.060 1982-07-01 0.060 1982-10-01 0.060 1983-01-01 0.060 1983-04-01 0.060 1983-07-01 0.060 1983-10-01 0.060 1984-01-01 0.060 1984-04-01 0.060 1984-07-01 0.060 1984-10-01 0.060 1985-01-01 0.060 1985-04-01 0.060 1985-07-01 0.060 1985-10-01 0.060 1986-01-01 0.060 1986-04-01 0.060 1986-07-01 0.060 1986-10-01 0.049 1987-01-01 0.049 1987-04-01 0.049 1987-07-01 0.049 1987-10-01 0.049 1988-01-01 0.019 1988-04-01 0.019 1988-07-01 0.019 1988-10-01 0.016 1989-01-01 0.016 1989-04-01 0.016 1989-07-01 0.016 1989-10-01 0.004 1990-01-01 0.004 1990-04-01 0.004 1990-07-01 0.004