Year	Percent change
1980	7.594
1981	0.734
1982	-2.27
1983	9.947
1984	13.34
1985	-4.478
1986	23.232
1987	28.12
1988	24.702
1989	6.787
1990	5.196
1991	15.098
1992	9.605
1993	7.815
1994	4.322
1995	10.209
1996	5.539
1997	13.564
1998	7.452
1999	4.323
2000	14.985
2001	-13.46
2002	6.357
2003	7.698
2004	17.389
2005	3.097
2006	4.836
2007	2.686
2008	-3.595
2009	-12.993
2010	28.016
2011	-0.084
2012	20.123
2013	1.12
2014	1.546
2015	0.477
2016	-4.034
2017	4.299
2018	0.639
2019	-0.599
2020	3.75
2021	1.85
2022	1.64
2023	1.67
2024	1.67