6.6

1953

4.8

1989

5.8

2024

7.2

2018

6.5

1990

4.4

1972

6.6

1975

7.0

2011

6.4

2016

6.7

7.8

1988

7.6

2015

6.6

2015

6.6

1972

6.3

1933

6.2

7.0

2020

6.4

2012

7.3