Year	Percent change
1980	8.25
1981	13.144
1982	12.998
1983	6.95
1984	10.922
1985	9.409
1986	13.1
1987	11.494
1988	16.812
1989	14.936
1990	8.7
1991	15
1992	10.8
1993	9.2
1994	13.294
1995	9.612
1996	11.773
1997	8.065
1998	12.355
1999	7.953
2000	6.928
2001	7.628
2002	9.366
2003	10.077
2004	6.916
2005	7.529
2006	11.224
2007	7.664
2008	17.323
2009	7.111
2010	0.951
2011	7.438
2012	5.906
2013	5.389
2014	5.169
2015	-0.559
2016	0.503
2017	0.477
2018	0.992
2019	1.655
2020	2.618
2021	6.166
2022	3.814
2023	4.242
2024	4.397