2001

8.3

2013

8.6

2024

7.9

2017

8.1

2020

7.1

2009

7.3

1998

7.2

2008

6.7

1962

7.8

1995

8.1

2004

8.5

2023

8.1

2012

6.3

1993

7.9

2006

7.9

2019

7.4

2006

8.1

2013

7.3

1988

7.6

2010

7.5