1979

5.0

1971

6.5

1976

6.7

1984

6.6

1955

6.6

1979

6.9

1968

7.1

1975

7.0

1969

6.1

1972

7.9

1980

7.3

1969

6.1

1983

7.3

1973

6.9

1982

7.1

1996

0.0

1987

8.4

1975

7.2

1978

7.2

1973

6.7

1962

7.5