1981

10.0

2009

5.6

2017

6.0

1976

4.9

2012

5.4

2018

5.9

2014

7.6

2006

6.8

2022

6.7

1990

4.4

2016

6.6

2011

6.3

2015

5.8

2010

6.9

1980

5.9

2020

8.1

2024

6.6

2015

5.9

2009

4.1

1978

5.8