2017

5.2

2018

6.0

1978

6.9

2016

7.0

1979

7.6

2017

6.3

2019

6.0

2022

6.8

2013

8.3

2015

6.4

2014

7.4

2012

9.4

2017

7.9

2005

5.8

1981

5.1

2023

7.1

2015

6.0

2022

5.5

1994

7.3