1989

8.2

1989

6.1

2004

6.2

2005

7.6

2011

8.5

2009

7.4

2001

6.7

2009

5.5

1997

7.1

2023

6.3

1988

8.0

2012

7.4

2024

0.0

2021

7.8

1996

7.6

2006

6.6

1984

6.7

2014

7.3

2018

6.9

2020

6.3

2018

0.0