2012

8.2

2012

8.4

2009

5.3

2008

7.7

2003

5.7

2015

7.8

2013

6.6

1952

7.7

2003

7.3

1976

7.0

1988

7.1

1989

7.3

2003

6.3

2008

6.4

2004

5.5

1957

6.2

1999

5.1

2012

9.7

1988

7.4

2006

7.0