2017

8.5

2014

5.6

2020

4.7

7.8

2020

7.2

2016

7.5

2021

7.1

1996

8.8

2008

7.5

2002

7.7

1977

6.2

2021

6.9

1992

6.3

2012

6.0

2023

6.5

2001

5.9

2008

6.2

2021

5.4