Year	Percent change
1980	13.329
1981	6.5
1982	15.211
1983	9.21
1984	6.055
1985	8.382
1986	-11.289
1987	3.3
1988	0.29
1989	4.44
1990	-7.39
1991	1.7
1992	-1.4
1993	2
1994	25.3
1995	3.15
1996	2.4
1997	1.5
1998	1.2
1999	1.1
2000	5.9
2001	5.571
2002	3.578
2003	3.713
2004	4.496
2005	3.007
2006	3.389
2007	4.486
2008	4.816
2009	4.789
2010	3.899
2011	2.231
2012	5.91
2013	1.571
2014	1.348
2015	2
2016	1.8
2017	1
2018	2
2019	2
2020	2
2021	2
2022	2
2023	2
2024	2