Year	Percent change
1980	-5.449
1981	6.82
1982	-1.63
1983	15.8
1984	7.066
1985	10.309
1986	2.817
1987	-17.48
1988	27.88
1989	-6.546
1990	4.189
1991	14.298
1992	6.342
1993	13.371
1994	13.783
1995	11.357
1996	-0.783
1997	4.546
1998	-5.339
1999	1.295
2000	2.923
2001	1.052
2002	-1.939
2003	10.174
2004	18.16
2005	8.27
2006	6.188
2007	-2.984
2008	2.817
2009	-3.484
2010	0.722
2011	4.548
2012	4.756
2013	4.126
2014	5.777
2015	-0.3
2016	4.283
2017	-0.341
2018	-1.78
2019	8.772
2020	3.557
2021	0.486
2022	2.351
2023	2.792
2024	2.56