2017

6.0

2016

7.2

2007

9.7

2012

7.0

2015

5.9

1982

5.9

2013

4.0

2009

8.8

2019

6.3

2023

9.6

2020

7.0

2022

7.8

2018

6.7

1987

5.5

1928

6.0

2022

7.4

2012

8.2

2021

6.8

1955

6.2