2002

6.2

1997

5.4

1984

6.3

2007

6.0

1980

5.6

1937

7.2

2023

6.9

2017

6.5

1998

6.2

1999

5.8

2019

5.6

2019

3.5

1976

4.5

2006

6.6

1996

5.9

1973

8.0

2006

6.1

2006

6.7

1997

5.7

1989

6.3