1927

6.1

2017

8.3

2007

7.4

1999

6.8

2000

6.9

1979

7.3

2003

6.3

1933

5.0

1930

4.3

1976

6.6

1980

6.4

1998

5.9

2008

6.8

2007

5.3

1977

6.6

1992

6.8

2005

6.0

2020

6.7

1949

7.0

1936

6.8