1997

6.6

1984

6.3

2010

7.2

2006

5.2

2016

6.8

2019

5.0

2020

7.0

1992

6.3

1953

7.6

2015

7.6

2021

6.6

2025

6.8

2024

6.2

1972

7.7

2022

6.5

1962

6.5

2016

6.7

1977

7.9