Year	Percent change
1980	7.325
1981	24.3
1982	10.4
1983	1.621
1984	8.412
1985	-1.07
1986	-3.245
1987	-6.639
1988	0.599
1989	-0.818
1990	-2.026
1991	1.5
1992	-5.911
1993	-0.327
1994	35.534
1995	10.859
1996	5.339
1997	2.928
1998	4.546
1999	-2.282
2000	2.916
2001	3.903
2002	2.669
2003	-1.891
2004	0.567
2005	7.823
2006	0.054
2007	0.057
2008	11.294
2009	4.298
2010	-2.786
2011	2.944
2012	0.465
2013	2.292
2014	-0.937
2015	1.006
2016	0.177
2017	2.386
2018	3.005
2019	2.4
2020	2.1
2021	2
2022	2
2023	2
2024	2