Year	Percent change
1980	8.834
1981	11.865
1982	-1.529
1983	5.162
1984	15.911
1985	5.167
1986	-2.54
1987	0.075
1988	4.599
1989	4.852
1990	5.021
1991	2.07
1992	12.744
1993	-2.306
1994	1.568
1995	3.311
1996	2.983
1997	11.655
1998	-2.051
1999	3.393
2000	13.223
2001	-8.05
2002	8.023
2003	9.209
2004	14.231
2005	7.861
2006	10.753
2007	8.765
2008	1.565
2009	-25.536
2010	28.32
2011	-0.141
2012	0.28
2013	-0.802
2014	6.221
2015	2.941
2016	1.713
2017	6.799
2018	3.1
2019	2.138
2020	2.51
2021	3.046
2022	2.763
2023	2.683
2024	2.641