1971

7.8

1979

5.9

1959

7.5

1982

6.9

1972

5.4

1971

5.9

1983

1.0

1955

6.6

1974

4.6

1967

6.8

1974

7.9

1975

0.0

1989

6.0

1967

6.7

1986

7.1

1981

7.4

1990

7.1

1977

7.2

1976

6.4

1974

5.0

1966

6.5

1976

5.0

1973

6.7

1969

6.4

1972

7.1

1979

6.5