2008

6.2

2007

6.1

2016

4.1

2008

5.9

2007

6.2

2001

5.6

2015

7.5

1976

6.4

2004

6.7

1977

6.1

1983

6.5

1971

7.0

2010

3.9

2005

5.3

2023

0.0

2014

1.7

2009

6.0

1981

3.2

1999

6.8

1975

6.0