2015

6.4

2018

6.5

2016

6.0

2008

6.4

2023

6.8

2024

6.6

2020

6.3

1985

6.1

2022

6.3

2018

6.1

2021

7.7

2017

7.8

1972

6.5

2018

6.3

2016

7.7

2012

7.4

2015

7.3

2014

5.9

2018

7.0

6.7