1952

6.7

1972

7.4

2017

5.5

2005

6.7

2014

7.0

1986

5.3

1961

7.2

1947

7.5

1933

2.0

2009

6.1

1956

7.0

1973

4.7

1950

6.9

1980

4.8

1991

6.5

1957

5.6

2018

6.3

1931

6.3

1931

5.6

1962

6.9