1994

6.7

2008

8.5

2021

7.1

2020

6.9

2014

8.0

1968

8.1

2021

7.6

1997

7.9

2023

7.0

2015

7.2

2013

8.1

2021

8.0

2023

8.4

2016

5.9

2012

7.7

2022

6.9

2024

8.2

2016

7.9

1978

7.4

1993

7.7