1997

6.7

2017

6.7

1983

6.4

2017

7.1

1976

8.0

1984

0.0

1962

8.4

1984

5.0

2020

6.1

1966

6.5

1972

5.3

1990

6.2

2005

6.8

2021

6.9

2021

6.7

2021

7.1

2017

5.7

1980

6.7

2023

0.0

2022

5.4