1941

8.0

1984

7.5

1959

8.0

2003

7.4

1950

8.1

1925

8.0

1960

7.8

2001

7.4

2005

7.8

1976

8.2

1973

7.0

1957

7.9

1975

8.0

1984

8.0

2009

7.1

2014

4.6

1947

7.5

2000

7.7

1985

7.7

1988

7.6