Year	Percent change
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	0
1990	0
1991	0
1992	0
1993	0
1994	0
1997	-13.472
1998	33.237
1999	25.413
2000	-7.088
2001	23.048
2002	8.253
2003	25.15
2004	24.013
2005	2.948
2006	5.254
2007	19.965
2008	11.65
2009	-11.311
2010	29.165
2011	8.592
2012	6.259
2013	-27.509
2014	-6.275
2015	4.396
2016	-0.343
2017	-1.517
2018	9.377
2019	7.299
2020	10.279
2021	7.601
2022	6.931
2023	6.739
2024	8.006