1972

4.0

2020

5.2

2015

7.6

2014

6.5

1993

5.5

2021

7.7

1996

7.5

1970

7.4

2016

7.7

2020

6.3

2017

5.8

2016

6.7

1991

8.1

2023

7.2

1999

7.3

1926

5.6

2006

4.2

2020

5.5

2020

7.2