1988

5.9

1988

5.6

1989

5.7

2021

6.8

1987

7.8

1970

6.2

2020

7.0

2008

7.3

1977

8.2

2007

7.0

1967

6.6

1981

8.9

1973

6.7

1979

6.5

1996

6.2

1940

8.2

2024

6.4

2023

7.1

1999

5.9