Year	Percent change
1980	-1.303
1981	15.69
1982	2.809
1983	6.228
1984	8
1985	7.4
1986	4.8
1987	-42.196
1988	0
1990	10.606
1991	7.372
1992	-9.472
1993	6.843
1994	3.232
1995	10.664
1996	4.451
1997	13.462
1998	17.697
1999	6.034
2000	-0.451
2001	-6.378
2002	-7.098
2003	-8.147
2004	13.888
2005	19.4
2006	12.853
2007	16.926
2008	22.828
2009	0.096
2010	-4.819
2011	-1.018
2012	2.58
2013	-0.296
2014	5.111
2015	16.977
2016	7.414
2017	-0.498
2018	-0.318
2019	3.045
2020	2.957
2021	3.248
2022	3.379
2023	3.574
2024	6.692