2015

6.4

2012

6.3

2017

6.0

2016

6.6

2013

7.5

5.4

2020

6.8

1982

5.9

2017

5.9

1985

6.2

1980

6.2

2011

7.4

2010

8.0

2020

5.5

2020

7.4

2017

7.6

2019

6.0

2024

7.4

2019

7.4

2023

6.8