1999

7.7

2017

8.2

2011

8.5

2019

8.4

2016

8.6

2022

8.5

2010

8.1

2008

8.9

2006

8.2

2011

8.3

2019

8.7

2019

8.3

2010

8.5

1989

8.0

2014

7.9

2021

8.8

2023

8.2

1999

8.7

2005

8.1

2015

8.7