1949

6.2

2010

7.5

1966

6.1

2016

6.2

2010

6.3

1993

5.5

1993

5.4

2009

6.8

2007

6.5

2023

6.9

2013

6.5

2010

6.2

2011

6.3

2001

6.1

2012

7.3

2014

5.9

2003

6.4

1991

5.3

2017

5.2

5.7