2004

5.1

2007

7.5

2014

6.1

2009

5.6

2010

6.3

2012

6.2

2005

7.4

2019

6.3

2017

5.5

2015

6.0

2013

7.2

2018

5.6

1960

7.8

2010

6.8

2014

6.9

2014

5.3

2011

6.7

2010

6.3

1982

6.4

2001

7.3