Year	Percent change
1980	-3.883
1981	-2.474
1982	4.481
1983	14.04
1984	8.925
1985	22.133
1986	11.128
1987	-7.415
1988	-1.417
1989	6.671
1990	-11.59
1991	-0.875
1992	-4.583
1993	-5.183
1994	6.566
1995	7.922
1996	4.546
1997	29.064
1998	23.346
1999	-9.303
2000	9.567
2001	-4.371
2002	-7.967
2003	-1.768
2004	-1.053
2005	15.297
2006	8.793
2007	0.92
2008	-4.943
2009	-11.362
2010	-5.323
2011	2.15
2012	9.213
2013	-1.706
2014	9.669
2015	4.536
2016	-4.864
2017	12.889
2018	-6.61
2019	-1.849
2020	-3.619
2021	1.156
2022	-0.352
2023	1.861
2024	1.929