1966

5.3

1984

7.6

1978

6.9

1972

5.5

1989

1.0

1981

5.5

1974

6.7

1966

0.0

1991

4.5

1955

6.6

1968

7.1

1965

7.6

1967

6.4

1976

5.2

1967

6.7

1980

6.0

1983

6.3

1966

6.0

1982

6.4

1971

6.8

1966

6.3

1983

7.5

1990

4.1

1965

6.1

1985

6.1

1963

7.2

1967

6.2

1972

6.0

1972

6.8

1968

6.8

1988

5.3

1980

5.0