2014

5.8

2015

6.7

2014

6.8

1918

6.6

1974

6.2

1983

6.0

1961

6.8

2006

3.6

2014

6.4

1935

2.0

2016

5.4

2017

3.0

1950

6.8

1976

4.7

1937

6.3

1996

1.0

1974

6.2

1961

6.8

1977

4.6

1961

5.8