2016

8.6

1983

7.8

2015

8.3

2008

8.9

2017

8.0

2005

8.1

2007

8.5

1969

7.8

2019

7.4

2008

8.3

2018

7.9

2021

7.4

1983

6.8

2011

7.5

2014

8.4

2023

10.0

2008

7.6

2010

7.7

2004

7.1

2015

8.0