1982

5.9

1940

6.0

1949

6.2

1985

6.9

6.4

2006

6.6

2013

8.3

2021

6.1

2020

6.4

2005

7.6

6.5

2012

9.4

1975

4.5

2021

9.2

2014

6.9

2021

1.0

1961

4.3