1989

7.3

2020

6.8

2009

6.2

2012

9.3

2019

7.0

2018

7.1

2019

5.9

1955

6.2

1923

7.5

2025

8.0

2024

5.7

2023

6.2

2019

6.4

1974

6.8

2018

6.4

1959

7.7

2019

6.7

1968

7.5

1955

7.2