Year	Percent change
1980	7.258
1981	9.051
1982	8.061
1983	6.555
1984	4.13
1985	-1.967
1986	0.369
1987	5.437
1988	5.852
1989	9.721
1990	3.979
1991	3.527
1992	11.062
1993	8.332
1994	12.514
1995	13.302
1996	5.514
1997	14.03
1998	11.358
1999	7.981
2000	11.398
2001	2.413
2002	17.719
2003	16.239
2004	27.035
2005	17.917
2006	15.98
2007	18.479
2008	7.007
2009	-4.541
2010	26.533
2011	12.14
2012	0.731
2013	5.345
2014	3.866
2015	-5.495
2016	6.684
2017	10.023
2018	9.104
2019	8
2020	8
2021	8.133
2022	8.5
2023	8.5
2024	8.5