1992

6.2

5.8

1968

6.9

2010

4.4

2021

6.1

2009

4.8

2011

4.7

2001

5.4

2005

6.5

2024

7.3

2018

6.5

2006

6.7

2020

6.5

2023

10.0

2004

4.8

1978

7.5

2015

6.2

2017

9.5