2014

6.3

1983

5.5

2016

6.7

1973

7.4

1994

6.2

1956

7.1

2009

8.5

2015

5.1

2010

6.9

2011

6.0

2005

6.4

2009

6.2

2006

6.4

1985

6.7

2007

6.0

2016

5.9

1992

6.4

1993

5.5

2004

6.5

2006

5.8