Year	Percent change
1980	1.038
1981	1.013
1982	5.719
1983	8.564
1984	4.289
1985	19.553
1986	8.2
1987	-3.267
1988	-0.176
1989	5.178
1990	-6.406
1991	-4.228
1992	-5.379
1993	1.245
1994	7.356
1995	2.814
1996	6.637
1997	26.239
1998	24.688
1999	-7.973
2000	7.659
2001	-1.315
2002	-3.42
2003	-3.799
2004	1.002
2005	9.018
2006	14.367
2007	-1.027
2008	-8.695
2009	-11.722
2010	-6.532
2011	2.477
2012	14.831
2013	-0.027
2014	6.879
2015	-6.293
2016	13.755
2017	5.926
2018	-4.305
2019	-0.203
2020	-2.25
2021	1.177
2022	0.135
2023	2.074
2024	1.85