1953

7.2

2000

5.1

2006

4.6

1999

6.6

2022

7.0

1993

6.5

2011

6.6

1971

6.0

2019

6.5

2020

6.5

2021

6.1

1975

6.4

2023

6.3

2017

6.6

2024

6.5

1993

5.4

1940

6.3

1977

6.5

2003

6.8

2014

7.0