Year Sterling (millions) 1975-12-31 206 1976-12-31 216 1977-12-31 330 1978-12-31 368 1979-12-31 543 1980-12-31 639 1981-12-31 603 1982-12-31 849 1983-12-31 797 1984-12-31 661 1985-12-31 768 1986-12-31 1001