2006

6.3

1980

5.9

2010

4.6

2021

6.1

2013

6.1

2020

7.0

2008

5.7

2019

8.2

1946

6.8

2004

7.2

5.6

2020

7.2

2003

8.8

2023

6.1

1978

6.9

1987

5.7

2016

6.8