1967

0.0

2010

6.1

2011

5.5

2016

6.0

2005

6.5

1956

6.6

2012

0.0

2005

0.0

2006

4.7

1990

2.0

2007

6.5

2006

3.2

2015

8.0

2008

3.9

1996

5.5

2012

5.8

2009

7.3