1987

7.8

1954

7.9

1949

5.5

2003

7.8

1955

6.2

1970

7.4

2014

6.4

1942

6.3

1938

5.7

1988

7.3

1926

5.8

1960

6.1

1989

7.1

1948

6.0

1999

7.1

2009

6.4

1997

5.6

1998

7.0

1979

6.9

1983

6.3