2017

5.9

5.4

2014

6.5

2011

5.6

1969

8.3

2006

6.5

2024

6.6

2007

5.7

6.3

2010

7.1

2016

6.7

2024

6.7

2012

6.3

1947

6.8

2015

6.2

2009

5.0

2018

5.8

1974

7.1

2005

7.8