1971

4.5

1975

0.0

1981

0.0

1991

0.0

1969

0.0

1971

8.3

1970

7.3

1970

7.7

1972

8.0

1974

5.5

1975

0.0

1978

5.5

1986

0.0

1967

8.2

1995

6.0

1966

6.0

1973

7.7

1976

9.0

1987

0.0

1986

0.0

1973

0.0

1975

4.0

1979

4.0

1973

0.0

1977

5.0

1982

8.0

1985

3.0

1993

6.0