Year	Percent change
1980	5.73
1981	4.609
1982	-2.955
1983	2.113
1984	13.912
1985	10.014
1986	5.556
1987	10.237
1988	-1.472
1989	3.992
1990	2.102
1991	-2.56
1992	14.081
1993	9.941
1994	13.239
1995	9.692
1996	6.098
1997	9.073
1998	6.221
1999	14.451
2000	23.4
2001	-11.672
2002	-2.081
2003	8.1
2004	17.521
2005	4.674
2006	4.975
2007	10.367
2008	5.745
2009	-11.793
2010	15.294
2011	9.483
2012	-2.064
2013	4.757
2014	1.679
2015	-3.181
2016	1.366
2017	5.146
2018	4.472
2019	3.381
2020	3.408
2021	3.45
2022	3.5
2023	3.5
2024	3.5