1957

6.3

1958

4.8

1956

6.2

1967

3.7

1957

9.5

1966

0.0

1967

6.6

1972

6.3

1967

5.2

1953

7.0

1969

5.1

1955

6.7

1950

10.0

1960

5.8

1963

5.1

1957

5.9

1958

6.0