Year	Percent change
1980	-24.638
1981	-15.819
1982	1.714
1983	-0.899
1984	7.224
1985	2.471
1986	-5.904
1987	-5.975
1988	5.162
1989	25.187
1990	19.512
1991	-1.114
1992	2.553
1993	12.541
1994	4.489
1995	6.231
1996	2.43
1997	3.378
1998	-6.227
1999	-5.3
2000	-10.458
2001	-5.042
2002	-8.456
2003	5.998
2004	5.469
2005	-4.169
2006	-10.022
2007	5.244
2008	2.849
2009	-3.405
2010	8.208
2011	-2.157
2012	-2.926
2013	-1.259
2014	2.207
2015	20.171
2016	-4.021
2017	-3.419
2018	-8.654
2019	14.437
2020	7.99
2021	4.362
2022	5.144
2023	3.23
2024	2.166