1973

7.6

2021

7.5

2022

6.8

2025

5.6

2020

5.2

2009

6.5

2022

7.4

1980

6.1

2025

6.9

1970

6.0

2020

6.0

1968

7.1

1986

7.3

2017

6.6

1983

7.8

1978

8.0

2020

6.4

2019

6.2

2020

5.4

2012

6.8