Year	Percent change
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	0
1988	0
1989	0
1990	0
1991	6.066
1992	-7.68
1993	4.389
1994	-3.01
1995	10.351
1996	-6.388
1997	-1.554
1998	-24.945
1999	40.284
2000	10.683
2001	-18.394
2002	2.728
2003	3.731
2004	7.77
2005	6.704
2006	7.465
2007	8.495
2008	1.432
2009	-10.344
2010	8.824
2011	3.913
2012	-0.22
2013	2.287
2014	4.21
2015	6.799
2016	1.718
2017	3.624
2018	3.179
2019	3.282
2020	3.405
2021	3.556
2022	3.628
2023	3.366
2024	3.362