1985

6.1

2015

6.5

2019

6.7

2023

6.3

1995

5.6

1992

6.5

2023

6.7

1985

6.9

2020

6.8

2005

5.2

1993

6.6

1940

6.2

1980

6.4

2011

6.6

6.6

2011

6.7

1995

7.8

2018

6.3

1976

7.5

1988

5.5