2011

0.0

1940

6.1

2004

5.9

2009

8.1

2009

7.2

2005

4.9

1998

0.0

1991

6.7

1980

6.3

1980

6.3

1979

6.7

2005

4.3

2004

6.6

1960

7.8

1988

6.3

1972

0.0

1943

7.1

1997

6.0

1963

6.7

1987

6.7