Year	Percent change
1980	33.17
1981	7.866
1982	6.747
1983	5.649
1984	8.069
1985	2.649
1986	-12.726
1987	-9.557
1988	20.386
1989	34.631
1990	4.835
1991	-0.251
1992	5.175
1993	2.385
1994	17.375
1995	25.559
1996	6.395
1997	15.102
1998	12.768
1999	-2.228
2000	1.897
2001	6.236
2002	0.035
2003	5.168
2004	-0.078
2005	11.555
2006	4.501
2007	6.026
2008	-1.03
2009	-10.748
2010	14.073
2011	2.125
2012	-6.01
2013	-3.472
2014	-7.735
2015	-1.626
2016	6.545
2017	-0.12
2018	-2.352
2019	10.595
2020	3.588
2021	6.037
2022	5.576
2023	7.06
2024	5.794