1997

8.0

2016

8.4

2023

0.0

2016

8.1

2010

8.5

2011

7.5

2015

7.5

2006

7.6

2000

7.9

1961

7.0

2019

8.5

1979

7.0

2016

8.2

2001

7.7

2012

8.7

2008

7.8

1998

7.4

2018

7.0

2017

8.0