1958

5.6

1957

6.4

1954

5.9

1956

7.0

1961

5.8

1965

6.8

1966

6.2

1955

0.0

1964

6.9

1950

3.5

1962

5.7

1945

6.0

1956

6.0

1958

5.5

1958

7.0

1956

7.0

1957

6.7