1968

4.5

1983

4.8

2023

6.7

2021

9.5

2001

4.3

2014

7.6

2012

6.7

1960

6.5

1977

6.7

1932

5.7

2010

6.0

2022

6.2

2017

9.0

2022

8.6

2013

7.9

2025

6.2

2018

6.8

2022

7.3