1988

5.5

1989

5.1

1981

6.7

1949

8.0

1974

6.4

2018

7.5

2009

6.2

1942

6.9

2018

6.5

1948

7.9

1924

8.1

2018

6.7

2021

7.4

2023

6.6

1980

7.1

1989

8.1

1991

7.1

1978

6.3

2019

7.5