2006

9.3

2013

8.6

2001

7.8

2021

8.8

2004

9.5

2023

8.9

2006

7.8

1990

6.9

2016

6.5

1985

8.5

2019

8.2

2006

8.3

1974

8.2

2002

8.3

2018

7.4

2015

7.0

2012

8.1

2023

8.9

2016

7.5

2017

7.5