Year Sterling (millions) 1975-12-31 0 1976-12-31 0 1977-12-31 0 1978-12-31 0 1979-12-31 0 1980-12-31 0 1981-12-31 2 1982-12-31 2 1983-12-31 3 1984-12-31 5 1985-12-31 7 1986-12-31 8 1987-12-31 10 1988-12-31 12 1989-12-31 14 1990-12-31 15 1991-12-31 12 1992-12-31 7 1993-12-31 6 1994-12-31 7 1995-12-31 6 1996-12-31 13