0.0

1985

7.0

1955

0.0

1981

0.0

1973

8.3

2014

6.3

1991

8.0

1979

0.0

1955

6.5

2007

5.9

1970

7.5

1988

6.7

1967

6.6

1936

6.8

1998

6.8

1968

6.4

1929

5.4

1952

6.7

2012

4.5

1983

6.0