Year	Percent change
1980	7.741
1981	-1.58
1982	2.309
1983	5.243
1984	2.529
1985	12.837
1986	20.291
1987	26.344
1988	10.916
1989	7.009
1990	0.45
1991	0.45
1992	0.45
1993	0.45
1994	7.554
1995	7.225
1996	21.06
1997	20.645
1998	22.048
1999	19.356
2000	22.078
2001	12.139
2002	3.552
2003	2.76
2004	1.348
2005	5.014
2006	1.812
2007	4.737
2008	3.336
2009	-11.637
2010	11.351
2011	9.042
2012	3.94
2013	-4.147
2014	7.346
2015	-4.856
2016	0.623
2017	3.248
2018	3.807
2019	3.984
2020	4.446
2021	4.701
2022	4.816
2023	4.841
2024	4.62