2004

5.5

2007

6.2

1991

5.9

2016

5.0

2001

6.4

1999

5.7

1996

7.4

2018

8.0

2006

0.0

2009

3.9

2023

1.0

1975

6.1

2020

2.7

2022

0.0

1988

5.2

2005

4.7

2023

0.0

2008

5.3

1971

7.5

2019

9.0