1966

7.3

1969

6.4

1981

6.7

1995

3.9

1963

5.2

1972

6.5

1958

6.5

1963

0.0

1983

6.0

1983

0.0

1984

8.1

1970

7.0

1961

7.7

1973

6.5

1968

10.0

1988

7.2

1958

5.7

1978

5.5

1981

5.7

1970

0.0

1962

7.3

1970

8.1

1975

7.8

1978

5.5

1994

6.0