Year	Percent change
1980	12.321
1981	8.6
1982	16.7
1983	10.4
1984	5.9
1985	7.3
1986	6.4
1987	-1
1988	-9.8
1989	6.903
1990	15.369
1991	-9.83
1992	-9.543
1993	0.534
1994	36.116
1995	9.647
1996	0.69
1997	3.973
1998	1.449
1999	-1.935
2000	0.504
2001	2.136
2002	0.164
2003	2.105
2004	0.408
2005	1.171
2006	-1.406
2007	-1.021
2008	5.263
2009	1.885
2010	1.447
2011	1.262
2012	2.683
2013	0.48
2014	4.512
2015	-0.143
2016	2.086
2017	2.652
2018	4.773
2019	3
2020	2.5
2021	2.54
2022	2.54
2023	2.54
2024	2.54