2006

6.7

2005

5.3

1983

6.9

1921

5.7

1989

7.5

1990

6.0

1971

6.6

2015

9.0

2016

0.0

1949

6.9

1970

5.8

1935

6.8

1971

3.0

1981

3.8

1978

0.0

2018

0.0

1958

7.1

1998

7.2

1982

6.9

1948

6.0