1977

8.1

2023

6.1

2009

7.5

2018

9.6

1992

6.9

2018

6.7

2010

7.6

2016

9.2

1974

8.2

2006

8.3

2003

7.6

2023

10.0

2025

7.7

2017

7.9

2012

7.7

2017

7.2

2019

6.6

1986

7.5

2020

8.4

2021

6.9