1966

6.6

1973

6.3

2001

6.1

1935

6.5

1991

5.7

1985

6.5

1967

6.4

1980

6.6

1924

7.8

1987

6.5

1976

6.7

1987

6.3

1940

7.0

2006

6.4

1982

5.7

1999

5.6

1994

5.7

1967

6.8

1939

6.7

1981

6.5