2004

6.9

2010

5.3

2020

7.9

2014

6.8

2024

6.8

2009

5.4

2008

6.6

2017

7.0

2002

6.7

2020

6.8

2006

6.2

2009

10.0

2022

6.5

2013

7.2

2015

6.0

1976

5.8

2005

0.0

2020

5.9

2005

10.0

2016

5.7

2020

6.7

2008

6.4

2013

5.5