1966

7.3

1981

3.0

1979

3.8

1973

4.4

1967

7.8

1980

0.0

1985

5.5

1968

6.7

1981

5.1

1969

6.0

1987

4.7

1979

6.0

1985

5.8

1974

5.9

1971

5.8

1992

5.0

1970

0.0

1974

7.6

1982

5.5

1966

7.6

1977

5.9

1965

7.5

1988

5.3

1975

7.0