1986

6.3

2024

6.0

2022

7.5

2015

7.9

2019

8.1

2012

7.8

2023

8.1

2021

7.8

2023

7.7

2018

6.8

1985

8.3

2011

6.9

2011

8.3

2007

7.8

2001

8.5

1971

8.2

2020

7.3

2000

8.2

1982

8.1

2019

7.4