1990

6.0

2008

5.7

2016

4.6

2005

8.3

1964

7.0

2015

7.3

2021

7.7

2023

6.4

2017

7.6

2023

7.7

2021

6.0

2009

7.3

2023

7.2

2024

7.0

2023

6.5

2024

5.5

2022

6.3

2001

6.1

2018

8.4

2012

6.4