1982

4.2

5.0

2021

6.3

2022

4.5

2010

6.2

2009

5.0

6.4

9.0

2013

6.4

2009

8.8

2008

7.4

2005

5.5

2002

0.0

2012

5.7

2011

6.2

1974

6.3

2015

6.5

2019

7.0