1961

7.2

1932

7.0

2005

6.8

1914

0.0

2006

6.9

1998

6.8

1982

4.5

1979

5.2

1975

10.0

1934

3.7

2004

6.8

2002

7.1

1948

7.9

2007

6.7

1963

6.5

1931

7.2

1931

7.5

1925

7.6

1933

6.9

2004

7.3