1998

8.7

2006

6.8

2021

8.2

2008

8.3

2015

8.1

2002

7.1

2008

5.8

2017

8.4

2022

6.6

1987

7.6

2016

7.5

1955

5.9

2020

8.4

2019

7.4

2024

7.0

2011

7.1

2019

9.1

2002

6.2

1983

5.0