1981

6.3

1979

7.0

2022

5.7

2007

6.4

1951

5.8

2023

6.4

2023

7.9

1968

5.8

2023

6.2

2001

7.2

2023

7.5

2015

5.9

1987

6.0

2020

5.5

2015

6.7

1982

5.7

2005

4.7

2019

6.3

1988

5.8