2001

5.9

2013

6.1

2023

6.1

2014

7.6

2017

6.9

2020

7.0

2012

8.9

2014

6.5

2009

5.7

1982

8.0

1969

6.4

2007

6.8

2004

5.7

2009

6.5

2021

6.8

2023

7.2

1970

6.9

2005

5.5

2008

5.6