1958

7.7

1960

5.9

1954

7.1

1969

7.1

1972

6.3

1969

6.1

1961

6.4

1966

5.6

1959

6.1

1970

5.9

1972

7.1

1962

6.3

1959

6.7

1957

6.0

1955

6.5

1951

6.9

1962

7.7

1955

6.1

1963

6.1

1952

5.2

1959

6.3

1970

5.5

1944

7.2

1956

6.3

1945

6.2