Year	Percent change
1980	-3.392
1981	3.859
1982	8.205
1983	4.899
1984	-3
1985	-3
1986	0.946
1987	4
1988	8.294
1989	6.403
1990	6.497
1991	1.778
1992	5.85
1993	6.686
1994	7.694
1995	9.174
1996	6.595
1997	4.62
1998	6.074
1999	7.953
2000	3.941
2001	8.765
2002	7.057
2003	6.159
2004	5.803
2005	10.007
2006	7.049
2007	8.064
2008	10.428
2009	8.069
2010	7.666
2011	6.821
2012	2.24
2013	4.714
2014	4.561
2015	5.67
2016	2.323
2017	4.977
2018	6.184
2019	6.288
2020	6.241
2021	6.129
2022	6.039
2023	6.324
2024	6.725