1977

6.6

2020

6.8

2012

7.7

2009

4.7

2022

8.1

2023

6.1

1955

6.2

1984

6.5

2017

6.4

1938

6.7

1989

6.1

1979

6.1

1986

5.9

2000

8.2

2022

4.5

1976

5.7

1975

7.4

2000

6.4

2002

5.5

1955

7.0