2008

5.5

2009

5.3

2011

6.0

2016

4.3

2010

5.9

1984

6.9

2012

4.0

1992

5.6

2021

0.0

2016

5.0

2010

6.0

2006

0.0

1971

6.4

1970

6.2

2003

6.0

2009

0.0