1998

9.2

2007

7.9

2013

8.7

2017

7.9

1999

7.3

1988

6.5

2017

8.2

1992

5.8

1999

7.9

2007

7.1

2017

8.1

2016

8.6

2024

7.8

1987

5.6

2022

7.5

2011

5.9

2006

7.7

2023

7.0

2020

8.4

2002

8.3