2018

8.1

2011

8.3

2000

6.9

2017

7.9

2008

8.3

2017

8.1

2016

6.9

1984

7.7

2020

7.0

1997

7.2

2024

7.3

2017

8.5

2010

7.8

2022

8.4

2007

7.8

2009

7.7

2001

8.1

2024

8.4

1990

7.4

2012

6.8