1985

6.7

1988

6.6

1959

6.8

1970

6.8

1943

6.8

1986

7.0

1977

6.6

1939

6.9

2004

6.4

1942

6.3

2009

7.2

2002

6.0

1975

6.0

1922

6.1

1932

4.5

1942

6.5

1939

7.1

1976

5.8

1984

5.6

1971

7.0