1983

5.7

1988

4.0

2021

7.0

1976

7.8

2010

6.3

1994

8.7

2025

6.9

2002

7.1

2020

7.3

1990

7.5

2011

6.4

2006

8.2

2014

7.8

2023

8.1

2016

6.4

1992

6.4

1997

7.9

1987

7.3

2018

7.5

2001

8.5