2006

7.7

1999

8.2

2020

7.2

2013

6.9

2013

7.1

2005

7.5

2009

8.0

2005

8.6

2008

7.6

2023

7.8

1981

6.5

2019

7.6

1963

5.7

1994

8.4

2016

7.0

2017

8.2

2021

7.3

2012

7.4

2024

6.7