1932

7.4

1991

6.2

1939

5.0

1960

8.4

1989

5.9

1970

4.9

1947

5.6

1990

1.0

1959

4.3

1934

5.3

2004

3.0

1925

0.0

1935

4.5

1942

6.9

1963

5.6

2003

6.2

1948

5.9

1997

6.7

1992

4.5

2002

6.8