1971

8.1

1962

5.1

1980

5.7

1972

0.0

1970

6.5

1979

6.7

1962

4.5

1967

6.0

1970

0.0

1973

6.3

1963

8.2

1977

7.4

1971

7.3

1975

7.7

1967

0.0