2012

6.0

2014

5.3

1992

6.2

2003

5.8

2009

5.5

1983

6.7

2005

9.9

2008

4.6

2007

6.2

2014

6.3

1999

6.2

2016

6.1

2013

7.3

2006

5.5

2009

7.2

1964

7.0

2009

6.7

2019

7.1

1993

4.9

2010

6.8