1984

6.5

1998

6.0

2010

4.8

1982

5.8

2005

4.1

2014

4.0

2024

7.3

2023

6.9

1972

4.4

2011

6.3

2021

10.0

1993

6.1

1997

5.8

7.0

1945

6.2

2020

8.0