2010

7.2

2020

6.4

2017

6.0

2008

6.8

2006

7.6

2007

6.9

2015

6.2

2010

5.8

2011

6.7

2001

6.9

2016

4.7

1896

5.2

2009

7.3

2014

7.1

2010

7.0

2025

6.4

2014

7.6

1970

7.7