1975

3.7

1981

6.6

1978

7.2

1955

5.3

1963

7.9

1979

6.5

1965

6.6

1969

9.6

1985

4.5

1968

0.0

1964

0.0

1979

6.8

1972

0.0

1979

6.8

1970

4.7

1990

8.6

1980

5.5

1977

7.4

1964

0.0

1965

0.0

1977

8.5

1962

7.0