Year	Percent change
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1990	0
1991	0
1992	0
1993	0
1997	-10.186
1998	31.411
1999	30.279
2000	-14.3
2001	33.181
2002	6.066
2003	7.733
2004	21.067
2005	9.912
2006	7.15
2007	21.222
2008	11.745
2009	-2.735
2010	-9.629
2011	3.533
2012	-5.237
2013	-13.269
2014	6.045
2015	2.206
2016	9.731
2017	4.166
2018	2.066
2019	4.938
2020	4.397
2021	5.565
2022	5.815
2023	5.686
2024	5.683