1980

8.5

1972

7.5

2007

6.6

1969

6.2

2022

3.9

1968

6.9

1970

8.0

2023

6.2

2004

9.9

1945

6.2

2016

8.2

1939

7.3

1967

7.3

2008

7.9

1993

7.6

1986

6.5

1965

7.4

2008

5.8

2021

6.5

2006

6.1