Year	Percent change
1980	-5.096
1981	14.092
1982	34.189
1983	7.968
1984	-6.027
1985	-16.597
1986	17.455
1987	-12.749
1988	6.341
1989	13.549
1990	5.911
1991	6.2
1992	-4.824
1993	-6.047
1994	3.746
1995	26.15
1996	-2.567
1997	-16.298
1998	15.36
1999	4.891
2000	-26.576
2001	3.223
2002	8.129
2003	20.842
2004	15.003
2005	-1.444
2006	-20.224
2007	16.937
2008	-6.737
2009	21.463
2010	-1.576
2011	16.312
2012	0.089
2013	15.3
2014	6.839
2015	-5.914
2016	8.636
2017	11.918
2018	10.02
2019	8.547
2020	12.274
2021	10.525
2022	53.987
2023	16.404
2024	3.638