Year	Percent change
1980	-5.4
1981	3
1982	6.4
1983	5.4
1984	5.6
1985	5.6
1986	-0.2
1987	-0.7
1988	-1.9
1989	4.8
1990	0.8
1991	-1.2
1992	1.6
1993	-2.102
1994	-0.9
1995	3.848
1996	3.8
1997	1.1
1998	5.098
1999	3.2
2000	3.8
2001	3
2002	5.6
2003	7.2
2004	4.3
2005	5.9
2006	1.684
2007	3.373
2008	2.36
2009	1.632
2010	3.616
2011	2.823
2012	3.391
2013	2.8
2014	3.8
2015	3.7
2016	3.2
2017	1.4
2018	2.059
2019	2.316
2020	1.777
2021	1.369
2022	1.085
2023	0.387
2024	0.432