2010

6.3

2021

6.5

2018

5.8

2016

7.5

2020

6.8

2019

7.0

2017

7.4

1985

6.4

2020

6.5

2016

6.8

2021

7.4

2016

7.3

1932

6.7

2016

7.8

2005

6.2

2021

7.4

1994

7.1

2011

5.1

1981

6.3

2017

6.2