1980

9.0

2006

5.8

1984

5.0

1987

3.9

2009

6.6

2008

6.5

1999

6.0

1993

5.1

2008

6.6

2005

6.1

1996

4.7

2002

6.4

2009

7.2

2023

5.7

2020

0.0

2016

4.0

2018

4.3

2015

7.8

2004

6.4

1997

5.3