2016

10.0

2009

6.3

2012

4.9

2008

6.3

2016

6.4

2018

6.9

2010

6.2

1955

7.3

2001

6.9

2007

5.5

1990

6.1

1986

7.6

2005

5.6

1951

7.2

2004

5.4

2006

7.0

2011

6.5

2006

6.2

2010

4.8

1972

4.4