1989

8.1

1981

6.4

1992

5.6

1989

5.6

1968

6.8

1971

0.0

1972

5.0

1957

5.0

1974

6.6

1982

6.0

1971

0.0

1986

7.4

1970

6.5

1966

5.5

1959

3.7

1969

7.3

1965

7.8

1961

7.7

1987

7.5

1969

8.0

1975

6.8

1971

7.3

1962

7.3

1971

7.7

1990

7.2

1974

5.3