Year	Percent change
1980	0.395
1981	-5.245
1982	2.516
1983	3.694
1984	5.373
1985	4.571
1986	-0.215
1987	1.625
1988	3.177
1989	1.345
1990	5.692
1991	8.73
1992	-7.333
1993	9.692
1994	-10.313
1995	13.83
1996	9.979
1997	6.587
1998	1.061
1999	3.541
2000	0.775
2001	-4.076
2002	1.76
2003	5.706
2004	5.42
2005	3.269
2006	4.7
2007	9.6
2008	7.64
2009	8.328
2010	6.874
2011	4.854
2012	1.886
2013	5.2
2014	5.7
2015	2.95
2016	2.27
2017	4
2018	3.17
2019	4
2020	5
2021	5.5
2022	6
2023	6.5
2024	6.5