1955

6.7

1963

5.7

1952

0.0

1946

4.0

1965

6.3

1969

6.0

1967

4.1

1970

6.0

1952

5.8

1948

5.0

1951

5.8

1950

6.8

1948

6.8

1968

6.0

1951

6.6

1957

7.0