Year Sterling (millions) 1975-12-31 18 1976-12-31 38 1977-12-31 43 1978-12-31 39 1979-12-31 55 1980-12-31 72 1981-12-31 129 1982-12-31 123 1983-12-31 141 1984-12-31 198 1985-12-31 263 1986-12-31 257