1955

5.0

2016

8.1

1965

6.9

2016

7.3

2005

6.8

1959

5.5

2015

6.6

1954

0.0

2013

5.0

2006

6.0

2004

6.6

2007

6.5

2009

7.0

2002

2.0

2003

5.4

2008

6.3

2005

6.6

2008

6.2

2016

7.9

2000

5.8