Year	Percent change
1993	-2.3
1994	-5.2
1995	-0.9
1996	1.7
1997	5.2
1998	4.3
1999	4.3
2000	3.8
2001	4.2
2002	4
2003	4.2
2004	7.4
2005	7
2006	7.5
2007	9.5
2008	9
2009	8.1
2010	8.475
2011	8.281
2012	8.18
2013	8.026
2014	8.008
2015	7.872
2016	9.013
2017	8.868
2018	5
2019	5
2020	5.5
2021	6
2022	6
2023	6
2024	6