1979

0.0

1978

6.0

1969

4.9

1974

5.5

1984

4.8

1984

7.4

1971

7.3

2000

6.7

1978

8.2

1965

0.0

1986

6.5

1960

6.9

1993

1.0

1977

8.3

1991

0.0

1959

3.7

1974

0.0

1975

7.2

1966

5.8

1984

6.7

1981

7.2

1977

7.5

1963

7.8

1973

6.6

1975

0.0