1998

6.8

2017

7.2

2022

7.7

2019

8.1

2009

7.6

2010

7.4

2016

8.5

2018

7.5

2019

7.8

2018

6.8

2017

7.2

2016

7.6

2021

7.9

2020

8.1

2022

7.0

1972

8.7

2003

7.1

2019

7.0

2017

7.8

2019

8.0