1976

7.6

1975

8.0

1950

8.1

1925

8.0

1941

8.0

1996

7.9

1960

8.1

1976

8.2

2005

7.5

1971

7.3

1979

7.1

1957

7.9

2010

7.3

2003

6.2

1960

8.2

1966

8.2

1952

8.3

2015

7.8

2003

7.5

1970

7.6