Year	Percent change
1993	-10
1994	-17.3
1995	-7.2
1996	-6.7
1997	-11.3
1998	6.7
1999	16.499
2000	18.587
2001	20.391
2002	15.768
2003	17.095
2004	14.692
2005	13.04
2006	10.967
2007	11.057
2008	14.747
2009	6.133
2010	9.16
2011	14.72
2012	11.051
2013	10.163
2014	10.346
2015	6.453
2016	6.2
2017	6.47
2018	6.24
2019	6.284
2020	6.036
2021	5.51
2022	5.603
2023	5.701
2024	5.719