1984

8.5

2022

8.1

2006

6.8

2010

8.2

2020

7.4

1979

7.4

2006

7.8

2023

9.1

2021

7.1

2007

7.6

2024

8.1

2017

8.1

2022

8.1

2013

7.4

2021

7.5

2018

7.2

1959

7.6

1991

7.7

2014

8.1

2016

7.3