1999

8.4

1987

5.5

2012

5.5

2003

5.8

2017

6.8

1973

7.7

2004

4.8

2021

6.5

2020

6.3

2025

4.0

2005

8.0

2021

5.7

1989

7.2

1992

6.8

2005

4.5

2005

7.0

2022

6.0

2010

10.0

2023

7.7

1973

6.0