1955

7.5

1959

8.1

1973

7.5

2004

6.3

1987

7.1

1980

6.2

2001

6.5

1957

5.5

2018

1.0

1970

6.8

1992

6.2

2021

0.0

1972

6.4

1959

7.9

1972

6.2

1955

7.9

1951

7.7

1938

7.4

1962

8.0

1960

7.5