2005

6.9

2006

6.5

1955

6.5

1985

6.6

1989

5.6

2003

6.0

2001

4.9

2003

5.5

1963

7.0

1980

6.7

1980

5.7

2016

6.2

1954

5.9

1998

7.2

1942

5.2

1990

6.5

1976

5.1

2008

6.9

2010

6.3

2009

4.7