5.4

1972

6.3

6.6

1984

7.6

2016

6.7

1994

9.7

1955

7.4

1923

8.5

2020

6.9

1996

9.5

1985

6.8

2007

7.7

2021

7.7

2006

5.9

1972

6.6

1990

6.0

1998

4.0

2017

6.4