Year	Percent change
1980	15.109
1981	69.772
1982	28.771
1983	6.5
1984	24.8
1985	13.4
1986	-5.7
1987	23.6
1988	12.094
1989	-3.658
1990	-2.302
1991	6.05
1992	5.562
1993	5.332
1994	15.553
1995	4.337
1996	1.92
1997	16.871
1998	9.737
1999	2.915
2000	11.518
2001	22.16
2002	15.805
2003	12.525
2004	13.679
2005	10.29
2006	12.301
2007	11.506
2008	6.593
2009	-7.758
2010	11.435
2011	6.338
2012	16.213
2013	-0.578
2014	5.322
2015	1.029
2016	3.726
2017	8.754
2018	4.936
2019	4.001
2020	2.516
2021	2.894
2022	3.494
2023	4.627
2024	5.199