Year	Percent change
1980	3.304
1981	0.1
1982	3.9
1983	6
1984	6
1985	-0.1
1986	2.4
1987	0.8
1988	-0.5
1989	-5.8
1990	-5.612
1991	-12.927
1992	-8.766
1993	1.528
1994	3.932
1995	7.138
1996	3.948
1997	-6.053
1998	-4.818
1999	-1.15
2000	2.921
2001	5.592
2002	5.184
2003	5.524
2004	8.359
2005	4.172
2006	8.056
2007	6.864
2008	9.307
2009	-5.517
2010	-3.901
2011	2.007
2012	2.077
2013	3.515
2014	3.411
2015	3.872
2016	4.801
2017	6.991
2018	4.127
2019	3.1
2020	3
2021	3
2022	3
2023	3.001
2024	3