2021

6.6

2020

6.7

1997

7.8

1968

6.9

2023

6.3

2013

5.7

2008

6.3

2017

6.0

2009

6.2

5.8

1975

6.0

2023

9.2

1953

6.6

7.8

1993

6.1

7.3

2002

5.9

2019

5.3

2016

7.0

2017

6.8