1969

9.5

1989

5.3

1984

6.0

1986

7.3

1972

6.4

1970

5.9

1988

8.1

1950

3.5

1979

6.2

1961

7.7

1956

6.0

1993

6.7

1970

6.0

1987

7.4

1960

0.0

1974

6.7

1950

0.0

1991

5.8

1968

5.0