1987

7.0

2006

7.8

2025

8.6

2018

7.5

2012

7.7

2015

8.3

1970

5.0

2023

7.9

2021

5.9

2004

7.3

2018

8.5

2024

7.1

2020

8.1

2016

7.6

2009

7.7

2003

5.0

1995

6.1

2005

6.2

1997

8.0

2020

7.0