Year	Percent change
1993	10.619
1994	7.289
1995	12.302
1996	3.509
1997	7.736
1998	9.02
1999	10.625
2000	26.835
2001	7.749
2002	23.818
2003	20.848
2004	17.383
2005	18.499
2006	9.038
2007	12.593
2008	30.226
2009	22.2
2010	14.198
2011	12.256
2012	2.878
2013	9.46
2014	10.04
2015	9
2016	9
2017	9
2018	9
2019	9
2020	9
2021	9
2022	9
2023	9
2024	9