1973

4.0

1999

6.9

1977

5.2

1994

5.3

2000

4.8

1975

7.5

1924

8.1

1995

5.8

2008

6.0

1933

7.6

2005

6.9

1993

8.0

1997

6.6

2001

6.2

1981

7.9

1984

7.3

2004

3.2

1984

5.0

2022

3.7

2006

6.6