2005

6.2

2001

6.9

2007

6.0

2020

6.8

1960

5.7

2008

6.8

1998

6.5

2005

6.8

2006

7.1

1992

3.0

2010

0.0

1958

3.3

2007

3.7

1950

0.0

1973

6.0

1991

6.3

2004

3.2

2015

6.0

1980

5.0

1984

0.0