1990

6.1

2022

5.5

1989

5.5

1994

7.4

1981

6.3

2002

4.4

1921

6.8

1997

6.0

1976

5.5

2001

4.9

1980

5.3

2002

5.6

1942

6.8

2010

7.7

1998

6.2

1992

7.7

1991

4.7

1941

7.0

1966

7.8

2004

6.1