1983

6.2

1996

7.5

1973

6.0

1980

6.1

1969

5.0

1972

6.2

1974

6.1

1971

6.4

1978

6.5

1998

0.0

1989

5.4

1979

5.9

1992

3.0

1967

6.7

1977

7.0

1991

6.3

1976

4.2

1984

5.5

1980

5.5

1982

6.4

1977

6.0

1978

5.0

1975

0.0

1977

7.2

1977

6.3

1977

5.0

1973

5.5

1982

4.0

1984

3.0

1977

0.0