2019

6.9

1983

7.3

2015

6.5

2014

7.4

2020

7.0

1997

7.8

1999

9.1

1977

6.0

2023

9.1

2020

6.9

2023

7.3

1993

7.3

1999

7.0

2017

7.1

2012

5.4

2022

7.0

2023

7.7

2021

6.8

1960

7.4