1985

6.7

1972

7.3

1987

10.0

1975

2.0

1970

4.8

1976

6.5

1973

5.0

1970

6.0

1978

7.0

1983

6.3

1977

6.5

1972

4.0

1979

0.0

1969

2.0

1982

5.0