2011

6.2

2008

5.8

2014

8.5

1997

7.9

2009

7.6

1994

8.5

1972

8.7

2014

7.7

1994

8.7

2004

8.4

1977

8.2

2017

8.2

2012

7.2

2023

8.1

2018

8.4

1999

8.0

2019

8.1

2022

7.3

2006

7.4

1997

8.4