2016

5.3

1988

6.0

2012

5.0

2003

4.9

2019

5.9

2014

4.6

2009

5.5

2018

6.1

1975

7.5

1993

7.4

2010

6.1

2017

6.7

2015

5.5

2006

7.4

1997

6.1

2017

6.2

2013

7.1

2014

7.4

2007

6.7

2007

7.8