1959

5.2

1976

6.9

1984

6.3

1983

6.6

1984

6.0

1991

7.7

1970

7.2

2011

6.5

1987

5.7

1938

7.1

2011

8.8

1959

6.9

1984

7.5

1982

6.1

2020

6.5

2001

7.0

1952

5.6

2017

6.8

2024

0.0

1994

6.4