1972

6.6

1993

6.5

2012

6.0

1985

6.9

1987

6.1

2017

4.9

2001

7.4

2018

6.5

2023

9.2

2019

7.5

2005

6.9

2010

7.1

2024

7.7

2013

6.1

2004

7.1

2023

6.9

2003

5.8

8.1

2022

7.5

2021

6.2