1961

4.9

1973

6.3

1983

4.3

1964

6.4

1969

9.0

1955

5.5

1967

5.7

1962

6.8

1960

0.0

1977

8.1

1967

6.0

1969

0.0

1976

6.0

1976

0.0

1968

5.5

1959

0.0

1963

6.2