2019

6.7

2021

6.1

1989

5.5

1980

6.4

1995

5.6

1998

6.0

1920

7.3

2020

6.5

1940

6.2

2011

6.6

1978

5.9

1993

6.6

1972

6.5

2023

6.3

2023

6.7

2005

5.2

2015

6.5

1985

6.9

1986

6.3

2017

6.6