Year	Percent change
1980	7.345
1981	1.056
1982	-2.797
1983	-1.5
1984	0.201
1985	0.757
1986	0.273
1987	-0.432
1988	0.559
1989	-1.131
1990	-0.44
1991	1.262
1992	-2.251
1993	-4.922
1994	-11.603
1995	9.892
1996	4.143
1997	2.705
1998	2.182
1999	2.71
2000	0.87
2001	-1.044
2002	-0.251
2003	0.364
2004	-3.523
2005	1.805
2006	2.249
2007	3.343
2008	0.844
2009	3.083
2010	-5.498
2011	5.524
2012	2.885
2013	4.241
2014	2.803
2015	1.211
2016	1.453
2017	1.173
2018	1.484
2019	1.476
2020	1.468
2021	1.512
2022	1.502
2023	1.604
2024	1.594