1979

5.0

1969

6.2

1971

6.4

1953

4.8

1977

4.7

1977

6.0

1972

0.0

1977

4.5

1974

7.1

1978

6.7

1973

4.0

1973

5.2

1976

6.2

1981

5.9

1991

6.1

1966

6.2

1981

5.8

1982

6.2

1971

5.6

1962

6.4

1984

1.0