1966

6.1

2010

6.3

1993

6.1

2018

6.0

5.3

2022

6.5

2019

7.0

1978

5.8

2019

5.6

1964

6.1

1985

6.1

1971

7.7

2015

6.7

2024

7.6

2020

6.7

2011

5.5

2017

7.3

1974

5.7

2014

6.7

2001

5.8