1953

7.9

1966

3.8

1997

4.8

1985

4.3

1940

6.8

1968

6.6

1977

4.8

1993

6.6

1961

6.7

2006

5.3

1978

6.8

2008

5.7

1987

5.7

1933

0.0

1988

6.2

2007

5.6

1935

7.2

2014

5.7

1993

4.8

1962

6.1