Year	Percent change
1980	-1.061
1981	5.244
1982	-4.988
1983	-33.125
1984	9.195
1985	5.857
1986	-7.484
1987	9.719
1988	-23.134
1989	3.39
1990	-0.839
1991	16
1992	1
1993	0.8
1994	14.636
1995	7.949
1996	-12.597
1997	20.513
1998	6.532
1999	-31.595
2000	12.822
2001	25.722
2002	19.015
2003	-4.06
2004	10.877
2005	13.163
2006	7.879
2007	6.116
2008	13.433
2009	-9.212
2010	14.291
2011	3.155
2012	0.385
2013	7.604
2014	4.346
2015	-7.819
2016	-9.394
2017	14.257
2018	7.455
2019	-2.792
2020	-0.571
2021	0.472
2022	2.256
2023	2.048
2024	1.771