1991

0.0

2020

1.0

2003

6.3

2008

6.2

2002

6.0

1996

4.8

2001

7.0

2005

3.2

2005

6.0

2022

0.0

2024

10.0

2011

0.0

1989

5.7

1999

6.1

1997

5.1

1980

8.2

0.0

2013

6.5

2015

0.0

2017

6.0