This is from 1960-1991
Year 3 months 4 months 6 months 12 months
1960 £4 1s 6d £5 10s 0d £8 3s 0d £16 10s 0d
1961 -- £5 10s 0d £8 3s 0d £16 10s 0d
1962 -- - £5 10s 0d £8 3s 0d £16 10s 0d
1963 -- £5 10s 0d £8 3s 0d £16 10s 0d
1964 -- £5 10s 0d £8 3s 0d £16 10s 0d
1965 -- £7 0s 0d £10 8s 0d £19 5s 0d
1966 -- £7 0s 0d £10 8s 0d £19 5s 0d
1967 -- £7 0s 0d £10 8s 0d £19 5s 0d
1968 -- £9 6s 0d £13 10s 0d £25 0s 0d
1969 -- £9 6s 0d £13 10s 0d £25 0s 0d
1970 -- £9 6s 0d £13 10s 0d £25 0s 0d
1971 -- £9 6s 0d £13 10s 0d £25 0s 0d
1971 -- £9.30 £13.50 £25
1972 -- £9.30 £13.50 £25
1973 -- £9.30 £13.50 £25
1974 -- £9.30 £13.50 £25
1975 -- £14.65 £22 £25
1976 -- £14.65 £22 £40
1977 -- £18.35 £27.50 £50
1978 -- £18.35 £27.50 £50
1979 -- £18.35 £27.50 £50
1980 -- -- £33 £60
1981 -- -- £38.50 £70
1982 -- -- £44 £80
1983 -- -- £46.75 £85
1984 -- -- £49.50 £90
1985 -- -- £55 £100
1986 -- -- £55 £100
1987 -- -- £55 £100
1988 -- -- £55 £100
1989 -- -- £55 £100
1990 -- -- £55 £100
1991 -- -- £55 £100