1976

7.2

1931

6.7

1957

7.1

1994

7.1

2009

6.1

2020

6.4

1987

5.5

1959

6.7

1999

6.5

2000

4.8

1997

6.6

2023

6.3

1972

5.0

1943

6.8

1984

6.9

1960

0.0

1988

6.3

2008

5.0

1989

6.6

1966

5.6