1974

7.7

1980

7.7

1972

6.0

1989

0.0

1978

6.5

1974

6.7

2015

6.4

1975

6.5

1975

7.3

1970

5.5

1992

6.3

1978

6.7

1981

6.3

1974

7.1

1975

7.8

1974

7.3

1971

5.3

1976

6.5

1966

6.2

1979

7.4

1972

6.7

1977

5.1

1979

6.1

1982

7.2

1970

7.3

1973

7.2