Year	Percent change
1981	-5.208
1982	0.963
1983	3.164
1984	-1.548
1985	6.72
1986	5.291
1987	7.79
1988	10.87
1989	8.364
1990	-2.3
1991	-6.902
1992	9.459
1993	16.684
1994	12.875
1995	8.234
1996	7.121
1997	16.112
1998	9.826
1999	6.908
2000	20.682
2001	-1.952
2002	2.959
2003	0.922
2004	6.427
2005	5.983
2006	22.018
2007	9.43
2008	0.28
2009	-22.319
2010	5.523
2011	0.207
2012	-0.604
2013	0.363
2014	-3.35
2015	-3.895
2016	3.331
2017	7.81
2018	3.4
2019	3.34
2020	3.1
2021	3.145
2022	3
2023	3
2024	3