2018

6.4

2016

6.8

2016

5.2

2005

6.5

2017

6.3

2020

7.1

2010

6.7

2017

5.7

2018

7.8

1987

7.6

2018

7.0

2017

6.8

1997

6.8

1941

7.3

2017

5.8

2012

6.2

2001

6.4

2004

5.7

2007

6.7

2023

6.3