1982

5.9

2015

5.9

2017

6.0

1993

6.1

6.7

2020

6.3

2021

4.9

2023

7.2

2022

5.9

2023

5.7

2024

6.6

2019

6.3

1920

6.4

2008

7.0

6.4

2021

7.4

2024

6.3

2023

6.3