1961

5.5

2001

7.7

1997

6.3

1972

5.0

2013

8.5

1978

6.2

1938

6.6

1935

6.4

1935

6.4

1949

6.8

1976

6.4

1979

7.3

2005

6.0

1961

4.3

1972

6.0

1993

3.0

1980

5.0

1976

6.6

1982

5.2

2017

0.0