7.8

2008

4.6

1974

7.0

2017

8.2

1923

8.5

2014

7.7

2007

6.8

2015

7.4

2016

9.5

2017

7.3

2010

5.5

2021

7.2

2023

8.4

1986

6.4

1997

7.4

2015

7.5

2013

7.3

1968

6.3

2006

7.0