2015

6.2

2005

6.4

2007

5.6

2007

6.9

2012

6.6

2018

6.1

1981

7.2

2003

5.7

1997

6.8

2006

5.9

2025

0.0

2014

7.0

2000

6.3

2009

6.5

2023

5.2

2008

7.4

2012

6.2

2013

7.2

2010

7.0

2017

7.1