Year Sterling (millions) 1986-12-31 47 1987-12-31 42 1988-12-31 58 1989-12-31 74 1990-12-31 60 1991-12-31 20 1992-12-31 25 1993-12-31 19 1994-12-31 5 1995-12-31 21 1996-12-31 16