1975

6.4

2017

7.6

2006

7.4

2021

7.2

1984

6.5

1927

7.1

1963

7.3

2019

8.2

1972

7.8

1991

5.9

1949

8.0

1927

7.8

1993

6.8

1996

5.9

1995

5.6

2017

5.6

1959

8.0

1980

7.0

1980

6.8

1958

8.2