1981

6.4

2014

6.8

2013

5.0

1938

0.0

2004

7.7

1971

0.0

1961

4.3

1972

6.0

1947

6.0

1945

5.0

1945

5.2

1950

5.6

1957

3.5

1959

6.0

1949

5.8

1969

0.0

2006

5.0

1967

7.3

1997

7.6

1999

7.3