Year	Percent change
1980	-27.936
1981	13.517
1982	6.027
1983	-17.913
1984	-13.72
1985	-6.003
1986	30.585
1987	39.484
1988	65.971
1989	8.785
1990	-14.802
1991	-1.504
1992	-34.156
1993	-0.346
1994	-20.159
1995	10.41
1996	24.495
1997	-8.031
1998	0.756
1999	-13.453
2000	4.727
2001	-15.948
2002	-0.922
2003	4.777
2004	35.098
2005	28.235
2006	39.352
2007	76.208
2008	0.059
2009	-19.167
2010	-2.355
2011	18.146
2012	-14.851
2013	-17.59
2014	-8.102
2015	2.911
2016	-18.208
2017	6.213
2018	-1.294
2019	20.1
2020	5.198
2021	2.269
2022	11.076
2023	23.653
2024	10.225