Year	Percent change
1980	7.4
1981	5.522
1982	-0.482
1983	4.674
1984	5.731
1985	5.668
1986	-1.453
1987	6.701
1988	0.071
1989	2.579
1990	7.075
1991	4.138
1992	8.009
1993	2.477
1994	3.628
1995	2.671
1996	6.855
1997	5.725
1998	4.963
1999	6.017
2000	4.299
2001	3.796
2002	1.323
2003	4.702
2004	6.236
2005	3.487
2006	5.244
2007	6.71
2008	4.238
2009	3.043
2010	3.511
2011	-1.918
2012	3.998
2013	2.876
2014	2.972
2015	1.153
2016	1.108
2017	1.955
2018	2.479
2019	2.742
2020	3.245
2021	3.5
2022	4.1
2023	4.1
2024	4.1