Annual (Financial) Sterling (millions) 1971-03-31 4 1972-03-31 0 1973-03-31 -20 1974-03-31 30 1975-03-31 84 1976-03-31 32 1977-03-31 42 1978-03-31 122 1979-03-31 -24 1980-03-31 10 1981-03-31 53 1982-03-31 -18 1983-03-31 149 1984-03-31 215 1985-03-31 80 1986-03-31 -11 1987-03-31 263 1988-03-31 335 1989-03-31 -564 1990-03-31 -66 1991-03-31 218 1992-03-31 -170 1993-03-31 590 1994-03-31 1175 1995-03-31 554 1996-03-31 -169 1997-03-31 387 1998-03-31 1388 1999-03-31 592