Year	Percent change
1980	-7.963
1981	13.385
1982	4.648
1983	8.633
1984	17.383
1985	10.233
1986	-6.404
1987	4.043
1988	19.896
1989	-6.746
1990	18.704
1991	-4.544
1992	3.091
1993	0.899
1994	-0.035
1995	-4.551
1996	7.418
1997	2.479
1998	5.204
1999	10.915
2000	3.909
2001	16.434
2002	6.892
2003	-4.321
2004	12.047
2005	6.865
2006	-4.031
2007	18.701
2008	12.255
2009	-13.169
2010	24.673
2011	7.132
2012	12.077
2013	9.433
2014	9.01
2015	8.494
2016	6.16
2017	11.475
2018	9.714
2019	4.556
2020	5.545
2021	2.88
2022	5.841
2023	6.149
2024	4.683