1957

8.1

1984

6.4

2007

6.9

2005

7.3

1974

7.1

2001

6.3

2023

8.1

2021

4.3

2015

6.2

10.0

2024

10.0

2002

6.0

1998

6.5

1989

6.9

2020

6.1

2014

6.5

2010

5.0

2022

8.0

2008

6.0

2010

4.7