2001

6.4

1971

3.0

1983

6.9

1921

5.7

1989

7.5

1971

6.6

1990

6.0

2006

6.7

2018

0.0

2000

7.1

2016

0.0

2005

5.3

1981

3.8

1978

0.0

2014

3.0

1964

6.6

1949

6.9

1982

6.9

2015

9.0

1935

6.8