1949

7.3

2005

5.2

1949

5.0

1974

6.2

2008

6.9

1952

7.3

1945

5.7

1996

6.0

1958

7.1

1961

6.2

2006

1.2

1952

6.7

1979

6.8

1973

7.1

1976

6.7

1979

7.5

1997

5.6

1988

0.0

1968

6.6

1938

6.9