1950

8.1

2009

8.3

1969

7.1

2008

5.5

2021

7.9

2006

6.5

2007

5.7

1899

5.7

1988

6.1

2014

9.1

2005

6.8

2004

6.2

2014

6.2

2017

6.0

2009

7.9

2009

8.1

2016

7.3

1929

5.9

2017

7.2

2016

7.0