Year	Percent change
1980	-1.141
1981	0.2
1982	-4.067
1983	0.987
1984	0.977
1985	7.527
1986	2.6
1987	2.242
1988	-0.191
1989	0.955
1990	-5.203
1991	55.523
1992	13.343
1993	12.909
1994	-5.04
1995	17.162
1996	10.753
1997	24.288
1998	30.488
1999	0.281
2000	12.72
2001	16.35
2002	7.789
2003	20.277
2004	25.276
2005	21.947
2006	10.352
2007	26.899
2008	15.04
2009	-18.313
2010	-3.137
2011	13.29
2012	-3.765
2013	7.32
2014	6.013
2015	-5.985
2016	-2.454
2017	3.396
2018	7.021
2019	7.395
2020	7.31
2021	6.903
2022	6.801
2023	6.079
2024	6.1