Year	Sterling (millions)
1977-12-31	1177
1978-12-31	1087
1979-12-31	797
1980-12-31	0
1981-12-31	0
1982-12-31	0
1983-12-31	0
1984-12-31	0
1985-12-31	0
1986-12-31	0
1987-12-31	0
1988-12-31	0
1989-12-31	0
1990-12-31	0
1991-12-31	0
1992-12-31	0
1993-12-31	0
1994-12-31	0
1995-12-31	0
1996-12-31	0