1968

5.6

2007

6.9

1970

6.4

1935

7.2

1961

6.5

1952

6.0

1988

3.3

1948

5.0

1957

5.1

2013

7.2

1931

4.4

2019

6.7

2015

3.8

1980

4.6

2006

5.3

1975

0.0

2009

6.4

2020

7.3

2014

5.0

2017

0.0