2001

4.9

2014

3.3

2006

5.0

2008

0.0

2003

5.4

1990

7.3

2013

5.0

2005

5.2

2010

6.0

2009

3.6

1991

7.6

2016

8.1

2002

5.7

2017

6.6

2023

6.5