Year	Percent change
1980	0.328
1981	14.517
1982	-2.559
1983	4.557
1984	7.969
1985	2.703
1986	5.338
1987	4.236
1988	7.383
1989	8.824
1990	3.508
1991	0.393
1992	4.843
1993	8.518
1994	12.337
1995	13.776
1996	2.516
1997	3.775
1998	2.559
1999	0.025
2000	12.292
2001	2.838
2002	-2.562
2003	-0.703
2004	6.45
2005	3.501
2006	8.241
2007	7.081
2008	-1.469
2009	-19.069
2010	12.517
2011	6.243
2012	1.756
2013	1.017
2014	3.016
2015	4.607
2016	1.835
2017	5.593
2018	1.575
2019	2.33
2020	3.028
2021	3.09
2022	2.907
2023	2.886
2024	3.195