Year	Percent change
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	0
1988	0
1989	3.654
1990	-10.104
1991	2.175
1992	54.823
1993	18.595
1994	5.656
1995	8.358
1996	21.979
1997	9.173
1998	10.635
1999	-13.747
2000	26.141
2001	18.57
2002	12.092
2003	-15.828
2004	-2.105
2005	10.5
2006	19.237
2007	11.06
2008	3.805
2009	-5.204
2010	3.68
2011	9.339
2012	-2.183
2013	-8.234
2014	-3.462
2015	9.671
2016	6.311
2017	9.869
2018	9.388
2019	4.033
2020	4.536
2021	2.712
2022	4.463
2023	5.633
2024	3.74