1986

6.1

1950

5.9

1999

5.2

2023

5.3

1981

6.1

1967

7.3

2004

5.2

1933

7.6

2002

7.3

1997

7.1

2002

6.7

1978

6.0

1902

7.9

2005

4.5

2007

6.3

1999

6.3

1977

7.3

2006

4.3

2001

4.1

2009

6.0