1983

8.0

2010

7.0

2019

6.7

1998

6.0

1949

6.2

2005

6.8

1978

5.9

1940

6.2

1911

9.5

1920

7.3

2021

6.2

2023

6.7

2020

6.4

5.0

1995

5.6

2003

6.6

1985

6.1

1980

6.4

2020

6.4

2022

4.5