Period

Date on which
period commenced

Date on which
period ended

Interest rate
(% per annum)

1   January 1946

1   August 1952

3.875

2   August 1952

31   March 1956

4.5

1   April 1956

28   February 1961

5.0

1   March 1961

10   April 1963

5.25

11   April 1963

31   March 1965

4.75

1   April 1965

31   July 1968

5.0

1   August 1968

31   March 1970

5.5

1   April 1970

30   September 1973

6.25

1   October 1973

13   September 1974

7.25

14   September 1974

28   February 1978

9.25

1   March 1978

31   March 1980

8.75

1   April 1980

31   July 1980

9.25

1   August 1980

31   December 1980

9.75

1   January 1981

31   August 1981

10.75

1   September 1981

31   March 1982

11.75

1   April 1982

31   January 1983

12.75

1   February 1983

30   September 1983

12.50

1   October 1983

30   November 1983

12.00

1   December 1983

15   April 1985

11.50

16   April 1985

14   July 1985

12.00

15   July 1985

30   September 1985

12.50

1   October 1985

2   April 1986

13.50