2004

6.7

2013

6.3

2007

6.5

2003

7.0

2015

6.2

2013

4.0

2002

7.0

2009

5.6

2020

6.8

2008

6.5

1965

7.2

1986

5.9

2008

7.6

2025

6.0

2011

6.4

2023

6.3

2017

6.8

2005

7.2

2012

7.0

2016

6.8