1975

7.0

2018

6.5

2024

7.2

2021

7.1

2012

9.3

2015

6.4

1985

6.8

2016

6.7

1993

6.5

7.8

6.6

2020

6.4

2017

6.2

2021

6.6

1980

5.9

2011

6.4

2024

6.9

2024

6.5