Year	Percent change
1980	8.81
1981	8.682
1982	7.389
1983	5.879
1984	4.281
1985	1.753
1986	6.837
1987	6.978
1988	6.935
1989	0.986
1990	-0.658
1991	1.575
1992	4.218
1993	2.13
1994	25.956
1995	14.1
1996	2.7
1997	6.301
1998	4.503
1999	0.744
2000	2.534
2001	4.355
2002	3.08
2003	3.297
2004	1.459
2005	3.884
2006	2.466
2007	1.896
2008	6.315
2009	1.009
2010	1.366
2011	4.895
2012	1.3
2013	2.584
2014	0.449
2015	1.244
2016	0.724
2017	0.831
2018	0.284
2019	2
2020	2
2021	2
2022	2
2023	2
2024	2