Year	Percent change
1981	7.78
1982	5.714
1983	8.393
1984	4.068
1985	4.414
1986	8.333
1987	7.469
1988	4.149
1989	0.1
1990	0.1
1991	1.69
1992	3.568
1993	2.52
1994	32.2
1995	7.7
1996	3.5
1997	4.587
1998	1.989
1999	1.555
2000	3.606
2001	4.783
2002	4.399
2003	-0.109
2004	4.443
2005	2.531
2006	2.037
2007	1.456
2008	8.954
2009	-1.669
2010	5.104
2011	1.967
2012	3.409
2013	0.415
2014	0.854
2015	1.415
2016	-0.228
2017	1.055
2018	1.1
2019	2
2020	2
2021	2
2022	2
2023	2
2024	2