2018

6.5

1995

8.1

2014

8.4

1991

8.3

2007

7.0

1942

6.9

2006

8.2

2015

7.0

2001

5.9

1974

7.5

1963

7.5

2014

6.9

2008

5.6

1952

7.8

1957

8.2

1980

7.9

1952

6.7

1895

6.9

1983

8.2

1945

7.4