Year	Percent change
1980	-8.986
1981	-13.295
1982	-16.259
1983	-8.766
1984	25.781
1985	-20.551
1986	18.987
1987	-11.662
1988	13.336
1989	2.33
1990	12.195
1991	-17.866
1992	11.942
1993	-10.985
1994	-6.449
1995	0.174
1996	27.812
1997	28.71
1998	28.693
1999	63.181
2000	5.641
2001	-6.364
2002	4.95
2003	-9.339
2004	25.507
2005	7.664
2006	15.391
2007	16.017
2008	16.537
2009	3.783
2010	30.826
2011	16.795
2012	10.034
2013	-0.629
2014	-1.778
2015	-2.844
2016	-5.105
2017	-1.033
2018	5.456
2019	-0.554
2020	1.126
2021	1.158
2022	0.196
2023	-0.338
2024	2.057