1989

5.9

2001

5.2

2014

6.5

1975

8.4

2017

5.8

2012

6.3

2017

8.0

2008

6.9

2011

6.4

2015

4.9

2021

8.3

2013

6.4

1967

6.2

2018

6.0

2006

6.3

2019

5.4

5.4

5.6

1994

6.7

2022

8.3