Year	Percent change
1986	9.2
1987	1.533
1988	-12.925
1989	-4.225
1990	-3.62
1991	-5.243
1992	-8.886
1993	17.779
1994	11.88
1995	0.283
1996	7.172
1997	-1.248
1998	-8.953
1999	5.374
2000	6.054
2001	5.381
2002	-17.746
2003	-19.986
2004	-8.323
2005	-9.354
2006	-2.504
2007	-7.859
2008	-39.717
2009	-6.36
2010	40.949
2011	-8.668
2012	5.312
2013	22.078
2014	4.711
2015	-4.123
2016	-1.293
2017	14.284
2018	3.469
2019	5.966
2020	6.651
2021	6.111
2022	7.548
2023	5.947
2024	5.831