2019

6.8

2014

7.5

2007

6.0

2012

5.9

2013

6.0

1994

7.1

2011

6.9

2022

7.5

2020

5.5

1971

6.4

2018

6.3

2004

6.1

2009

5.0

2021

6.3

2001

6.9