1975

7.1

1999

8.6

1971

8.1

2008

8.9

2016

8.6

2013

8.2

2022

7.0

2006

8.6

2021

7.9

2022

8.4

2021

8.2

1990

6.9

2005

7.6

2017

8.5

2022

7.3

2003

7.4

1994

8.4

2024

8.4

2022

8.2

2025

7.4