Year	Percent change
1980	5.013
1981	0.214
1982	-7.551
1983	6.076
1984	11.332
1985	-1.419
1986	7.275
1987	21.997
1988	10.861
1989	15.474
1990	11.209
1991	11.457
1992	12.069
1993	6.269
1994	0.162
1995	0.656
1996	1.425
1997	3.547
1998	3.732
1999	8.777
2000	13.02
2001	5.03
2002	5.109
2003	9.33
2004	4.645
2005	2.583
2006	4.578
2007	1.104
2008	3.228
2009	0.671
2010	3.383
2011	2.163
2012	2.938
2013	0.852
2014	3.692
2015	3.432
2016	-0.588
2017	1.437
2018	3.035
2019	2.497
2020	2.096
2021	1.788
2022	1.691
2023	1.712
2024	1.687