1958

7.6

1959

5.4

1961

4.9

1959

7.0

1947

6.6

1960

0.0

1950

7.1

1954

6.7

1944

6.8

1967

4.3

1967

7.7

1963

8.2

1968

6.3

1957

5.8

1967

6.2

1954

6.0

1952

5.9