1969

7.1

1982

6.6

1973

0.0

1972

6.6

1972

6.8

1981

6.0

1978

6.5

1973

5.5

1977

6.8

1978

6.5

1974

5.8

1978

4.6

1980

4.0

1971

6.0

1970

6.7

1981

5.7

1974

5.9

1973

6.3

1974

7.3

1974

6.5

1973

0.0

1972

5.6

1972

6.2

1979

7.0

1977

6.5

1976

6.4

1974

6.3

1982

6.3

1972

6.9

1976

6.3

1978

2.0

1978

6.0

1979

6.7

1970

6.2

1977

6.5

1971

6.9

1973

6.4

1972

6.7

1976

6.7

1975

6.7

1979

6.5

1972

5.7

1973

6.7

1971

6.6

1979

6.4

1983

6.3

1979

6.0

1975

6.7

1974

6.4

1978

6.1

1974

4.0

1982

6.0

1978

6.4

1977

5.2

1975

6.7

1979

0.0

1980

6.2

1978

6.1

1982

0.0

1984

1.0

1981

0.0

1976

6.1

1971

0.0

1983

5.7

1970

6.3