1986

7.4

1989

6.4

1993

5.3

1990

7.6

1981

6.2

1973

0.0

1983

6.3

1983

4.1

1991

6.2

1981

6.7

1987

6.2

1981

5.7

1991

5.7

1982

0.0

1976

6.0

1988

6.0

1979

4.0

1988

6.2

1976

6.5

1979

7.0

1977

9.0

1977

3.4

1986

6.3

1983

6.3

1982

6.0

1985

6.6

1988

9.0

1979

6.9

1987

5.4

1979

7.1

1991

7.2

1989

7.0

1983

6.2

1983

7.2

1979

7.2

1977

6.0

1989

6.3

1986

4.2

1977

4.3

1983

6.6

1982

6.7

1976

6.8

1978

6.5

1973

6.2

1977

0.0

1971

0.0

1981

6.7

1973

6.8

1973

4.5

1975

0.0

1979

6.3

1976

4.3

1972

0.0

1979

6.7

1975

6.7

1992

6.5

1979

6.2

1977

4.8

1986

6.7

1975

6.8

1991

4.5

1990

5.5