Year Sterling (millions) 1975-12-31 201 1976-12-31 200 1977-12-31 255 1978-12-31 317 1979-12-31 470 1980-12-31 528 1981-12-31 573 1982-12-31 685 1983-12-31 652 1984-12-31 594 1985-12-31 761 1986-12-31 923