1983

6.5

1975

6.2

1980

6.3

1972

6.6

2008

7.8

2015

5.1

2021

5.9

2004

6.5

2007

10.0

2023

5.8

1928

6.0

1988

5.4

2023

5.6

2022

7.3

2024

6.3

2023

6.7

2017

7.3