1942

6.0

1932

7.5

1946

7.6

1995

7.9

1996

7.0

2000

6.1

2006

6.7

1941

7.7

1962

7.0

1954

7.9

1965

6.7

1969

6.6

1971

6.4

1977

6.8

1990

8.5

1948

7.9

1988

7.7

1996

7.4

1981

7.2

1942

6.2