1970

0.0

2019

6.4

1986

6.3

2019

5.4

2006

7.8

2008

6.0

2017

6.7

2004

7.7

2010

5.0

2005

7.4

2019

6.7

2019

6.3

2021

7.9

2009

6.1

1981

6.9

1992

0.0

2018

7.0

2023

9.3

2011

5.2

2005

6.1