2001

6.7

1975

7.2

1990

6.9

1999

8.2

1978

4.5

1987

7.5

1976

5.5

1951

8.7

1987

7.7

1982

6.8

1992

7.0

1999

7.5

1993

7.0

1969

6.0

1992

6.7

1986

7.1

1984

7.5

1981

7.0

1982

6.5

1985

8.0

1995

0.0

1999

6.5

1979

0.0

1967

7.6

1948

6.6

1979

6.6

1977

6.3

1961

5.1

1971

4.0

1997

4.2

1987

5.5

1977

0.0

1962

7.4

1956

4.6

1980

6.3

1995

7.0