2011

5.9

2005

6.4

2004

5.9

2016

7.4

2005

7.0

1942

6.9

1988

6.2

2018

6.3

2008

6.7

2013

6.2

2013

6.5

2002

6.5

2009

5.0

2014

6.8

2017

5.6

1989

7.8

2015

6.0

1983

4.5

1954

6.7

2016

6.0