Year	Percent change
1983	3.947
1984	5.316
1985	12.5
1986	27.35
1987	2.517
1988	13.584
1989	4.035
1990	6.925
1991	13.831
1992	8.418
1993	-2.698
1994	7.58
1995	-0.032
1996	3.122
1997	1.979
1998	3.051
1999	6.29
2000	7.159
2001	10.7
2002	11.993
2003	11.748
2004	10.078
2005	7.34
2006	4.853
2007	6.802
2008	6.369
2009	1.173
2010	5.022
2011	3.844
2012	2.51
2013	0.659
2014	0.374
2015	-1.118
2016	6.687
2017	5.57
2018	6.689
2019	5
2020	4.939
2021	3.4
2022	2.5
2023	2.5
2024	2.5