1978

7.4

2020

7.3

2017

6.8

2018

6.2

2012

7.8

1940

7.8

1980

7.3

2001

6.1

2015

6.5

2013

6.6

2019

8.1

2019

7.8

2020

7.6

2021

6.0

1976

7.3

1981

6.5

2017

6.1

2012

6.5

2021

6.8

2005

6.6