6.1

1994

8.9

2017

9.5

1997

6.3

2011

7.2

1989

5.8

2020

6.9

2021

5.7

2022

6.3

1996

6.5

1974

6.4

1994

7.6

2008

7.8

2014

6.9

2010

9.1

2021

5.6

2025

7.8

2002

4.7

1940

6.0