2015

5.3

2010

6.9

2016

5.3

2019

6.5

1977

6.3

2008

5.9

2005

4.5

2006

5.2

2009

7.9

2021

5.5

2004

0.0

2006

1.0

2007

6.0

2020

5.0

2014

5.0

2011

7.0

2017

9.0

2013

6.6

1971

6.4

2012

2.0

2001

5.9

2004

6.1

2018

0.0

2020

7.6