2009

6.4

1979

6.9

2002

7.6

1987

7.8

1954

7.9

1963

8.1

1957

8.2

2003

7.8

2001

7.9

1928

0.0

1974

0.0

1970

7.4

1983

6.4

1921

0.0

1930

5.0

1917

0.0

1991

6.9

1964

6.9

1955

6.2

1967

0.0