1896

5.2

2009

6.1

2001

5.9

2003

6.8

1996

8.0

2005

7.8

1901

5.8

2014

5.6

2017

4.5

2021

8.3

2011

6.6

1972

7.3

1977

6.7

2006

6.3

2018

6.8

2021

6.0

2020

7.2

2023

6.6