2017

8.9

2021

6.4

2018

7.2

2016

7.6

1998

9.1

2020

6.7

2009

9.0

2018

8.2

2010

6.7

2022

7.9

2020

8.3

2013

6.7

2023

6.4

2019

7.1

2006

7.2

2017

7.4

2019

10.0

2002

7.6

1984

6.8