1979

7.0

1980

6.1

1984

6.9

1981

5.2

1980

5.8

1976

6.7

1978

5.7

1979

6.2

1963

6.3

1977

6.7

1964

5.0

1966

0.0

1979

6.0

1969

9.2

1972

6.0

1981

5.7

1957

0.0

1980

4.2

1966

5.4

1977

4.8

1979

4.2

1985

5.9

1972

7.0

1966

7.1

1967

6.2

1971

0.0

1963

7.3

1956

5.8

1963

6.4

1975

3.7

1974

2.5