1985

6.4

1916

6.6

1938

7.5

2000

6.5

2001

6.2

1998

6.9

2003

5.8

2001

6.1

1968

3.0

1985

4.8

1992

6.6

1987

5.6

1972

6.4

2023

0.0

1968

3.7

1985

7.6

1991

5.7

2004

7.1

2005

5.9

2008

6.1