2006

5.9

2015

6.2

1968

6.9

2009

6.5

2010

6.4

2019

6.3

7.3

2012

6.4

2012

7.2

2005

6.4

2021

9.2

2017

9.5

2019

6.2

2014

5.2

1985

8.9

2011

7.3

2006

5.0

5.8

2018

7.6

2014

6.3