2013

4.5

2015

6.6

2007

7.6

2009

7.9

2016

4.9

2014

7.8

2008

6.0

2013

5.7

1967

6.5

2007

6.5

6.4

2010

6.8

2021

6.2

2012

6.3

2014

7.5

2005

5.1

2015

7.1

2015

6.3

2001

6.2

2020

6.5