2008

5.7

2013

6.1

2019

6.3

2021

5.7

2013

5.8

2018

6.7

2003

6.1

6.2

2010

6.6

1974

7.0

2016

6.8

1984

6.5

2007

7.7

2008

7.6

2013

6.1

2010

7.0

2017

4.9

2015

7.1

2016

7.1

2025

6.6