Year	Percent change
1980	10.946
1981	12.376
1982	0.426
1983	11.763
1984	8.577
1985	-6.507
1986	0.705
1987	-15.004
1988	5.377
1989	15.818
1990	-1.486
1991	31.596
1992	-43.556
1993	14.214
1994	10.841
1995	16.063
1996	2.15
1997	20.286
1998	11.247
1999	1.929
2000	-5.11
2001	1.116
2002	-0.291
2003	2.75
2004	10.854
2005	4.823
2006	-1.947
2007	-3.097
2008	-4.02
2009	-11.336
2010	0.179
2011	-8.852
2012	-5.716
2013	1.344
2014	0.908
2015	10.376
2016	7.356
2017	-5.207
2018	-3.349
2019	2.944
2020	2.294
2021	3.413
2022	3.465
2023	3.496
2024	3.703