Year	Percent change
1980	-0.1
1981	-4.2
1982	3.2
1983	1.2
1984	0.9
1985	6.7
1986	9.8
1987	0.9
1988	3.9
1989	0
1990	7.917
1991	6.505
1992	-4.988
1993	11.675
1994	19.112
1995	16.601
1996	10.854
1997	-10.009
1998	-2.046
1999	-5.215
2000	-4.925
2001	18.631
2002	11.039
2003	4.028
2004	8.782
2005	15.701
2006	-0.071
2007	17.124
2008	3.747
2009	-6.258
2010	8.744
2011	9.21
2012	6.783
2013	-2.163
2014	5.838
2015	6.204
2016	-2.615
2017	-6.164
2018	15.086
2019	9.996
2020	9.295
2021	9.871
2022	8.612
2023	7.03
2024	7.144