1971

6.8

2009

7.9

1976

4.7

2024

5.9

1990

6.5

1979

5.8

2024

6.4

2023

7.7

1982

5.7

1973

6.2

2017

7.4

2021

7.5

2023

6.4

1990

5.7

2019

7.5

1956

6.7

1953

8.2

2018

5.7

2010

7.5

2022

7.1