1979

5.9

1979

3.2

1967

6.1

1977

5.6

1979

3.8

1966

6.0

1976

5.0

1969

3.7

1951

8.0

1975

3.5

1961

6.2

1972

6.0

1969

5.0

1974

7.0

1970

0.0

1966

5.2

1975

5.1

1997

4.8

1969

5.5

1978

4.0

1999

0.0

1982

4.0

1965

5.6

1975

0.0

1953

7.4