2004

6.6

2015

5.1

2025

6.0

2010

7.5

2007

7.3

2009

7.4

2011

6.3

2013

6.9

2016

7.0

2012

7.1

2012

8.4

2017

6.6

2023

9.4

1996

5.3

2006

9.8

2014

7.0

2022

6.8

2016

6.8

1989

9.3

2003

6.2