Year	Percent change
1980	11.728
1981	3.623
1982	-2.291
1983	3.209
1984	-2.284
1985	4.007
1986	15.737
1987	3.504
1988	5.03
1989	10.868
1990	9.037
1991	6.76
1992	1.731
1993	0.17
1994	0.727
1995	10.98
1996	12.453
1997	4.052
1998	20.254
1999	5.93
2000	15.833
2001	0.073
2002	0.724
2003	10.111
2004	2.918
2005	1.016
2006	14.182
2007	16.434
2008	-0.641
2009	-21.331
2010	-5.819
2011	-8.83
2012	-8.616
2013	-0.47
2014	8.042
2015	3.292
2016	2.607
2017	6.744
2018	-3.394
2019	3.5
2020	3.4
2021	3.2
2022	2.902
2023	2.197
2024	1.498