Year	Percent change
1980	-2.253
1981	-3.877
1982	-2.071
1983	-0.616
1984	4.306
1985	10.294
1986	0.762
1987	4.875
1988	5.326
1989	10.286
1990	7.455
1991	2.76
1992	7.173
1993	7.303
1994	-2.437
1995	0.485
1996	9.998
1997	12.194
1998	2.467
1999	1.872
2000	4.253
2001	-2.271
2002	1.213
2003	-5.887
2004	-2.85
2005	9.006
2006	9.406
2007	10.418
2008	-2.141
2009	-1.107
2010	5.945
2011	5.379
2012	3.68
2013	6.018
2014	4.531
2015	4.911
2016	4.503
2017	5.285
2018	3.597
2019	3.431
2020	3.3
2021	4.118
2022	4
2023	3.802
2024	3.557