2015

8.1

2012

6.2

2004

7.1

2017

5.5

1920

6.7

2011

6.9

2012

7.1

1985

6.1

2008

6.8

2011

7.0

2014

6.2

2014

6.5

2018

6.5

2007

6.9

2018

7.0

2006

7.2

1963

7.7

2025

7.7

1991

5.7