1998

9.2

2011

4.7

2004

7.8

2014

8.5

1990

8.2

2022

6.0

2021

7.9

2006

8.5

2009

6.3

2024

8.0

2017

7.1

2022

6.4

2015

7.8

1987

7.8

2020

7.5

2004

8.3

2013

8.1

2008

8.4

1991

7.4

2020

3.6