1973

0.0

1964

5.4

1961

5.7

1963

5.0

1962

7.6

1956

6.0

1997

5.1

1954

6.6

1982

6.8

1953

6.2

1978

4.5

1950

5.2

1958

6.5

1962

5.7

1997

6.0

1955

4.2

1960

6.2

1960

5.0

1959

5.6

1959

6.3

1976

6.4

1959

5.9

1961

5.1

1959

8.4

1962

6.4

1957

5.0