Year	Percent change
1980	8.42
1981	5.977
1982	24.992
1983	-8.84
1984	14.934
1985	5.159
1986	17.78
1987	20.329
1988	23.541
1989	22.914
1990	12.627
1991	17.215
1992	10.927
1993	11.485
1994	17.715
1995	13.376
1996	0.634
1997	12.242
1998	-0.848
1999	12.057
2000	24.235
2001	0.497
2002	3.959
2003	11.682
2004	14.42
2005	7.45
2006	11.108
2007	11.856
2008	4.893
2009	-14.227
2010	16.445
2011	8.276
2012	2.459
2013	0.24
2014	1.077
2015	-1.54
2016	0.461
2017	5.977
2018	5.497
2019	4.386
2020	4.796
2021	5.624
2022	5.34
2023	5.394
2024	5.283