Year	Percent change
1980	4.429
1981	2.277
1982	0.948
1983	1.574
1984	3.351
1985	3.107
1986	5.824
1987	5.369
1988	4.064
1989	3.414
1990	4.282
1991	2.372
1992	4.353
1993	5.71
1994	5.147
1995	5.202
1996	2.056
1997	3.43
1998	0.57
1999	-4.204
2000	2.925
2001	1.678
2002	2.504
2003	3.918
2004	5.333
2005	4.707
2006	6.779
2007	6.848
2008	3.257
2009	1.205
2010	4.347
2011	7.363
2012	3.903
2013	4.567
2014	4.729
2015	2.956
2016	2.087
2017	1.351
2018	2.658
2019	3.537
2020	3.649
2021	3.749
2022	3.749
2023	3.749
2024	3.649