1997

6.2

2002

5.5

2011

3.8

2013

0.0

2001

7.1

2008

5.0

1999

5.1

2012

7.6

2007

8.1

2001

3.9

2023

7.1

2016

4.3

2003

4.0

2005

4.6

2019

7.7