1947

7.3

1984

7.2

2009

4.6

1939

7.1

2017

6.6

1939

7.5

2006

6.8

1966

6.5

1989

7.3

1973

7.3

2021

5.5

1987

7.0

2022

8.2

2018

7.4

2020

6.0

2024

6.8

2016

6.7

2018

6.2

2019

7.2