6.4

1999

9.1

6.6

1993

7.2

2020

6.1

2013

6.9

2022

4.5

2023

6.8

2021

6.2

2024

6.0

2009

6.0

2017

4.9

2012

6.4

1978

6.0

1979

10.0

2007

5.7

2017

6.0

2018

6.3

2023

6.0

2015

7.2