2012

6.5

2010

7.8

2003

6.9

2002

6.0

2011

4.5

2008

6.3

2012

6.9

2012

6.3

1973

6.5

1983

6.4

1995

6.8

2004

7.8

2007

7.4

2016

6.6

1944

6.3

1970

7.5

2012

7.0

1952

8.1

2012

6.6