1967

0.0

1981

6.9

2010

5.9

2008

6.9

1998

5.8

1935

6.4

1994

7.5

1971

0.0

1987

7.3

1955

5.3

1995

0.0

1982

0.0

1980

6.1

1924

7.7

1951

6.1

2008

7.2

1946

5.7

1958

5.0

1971

0.0

2002

7.0