Year	Percent change
1980	12.292
1981	-0.655
1982	-8.479
1983	-3.274
1984	7.107
1985	3.512
1986	5.354
1987	12.237
1988	17.785
1989	11.423
1990	8.567
1991	6.717
1992	7.524
1993	3.251
1994	9.571
1995	11.65
1996	8.887
1997	14.485
1998	2.176
1999	4.177
2000	9.927
2001	-6.331
2002	-3.335
2003	2.937
2004	8.762
2005	7.652
2006	9.915
2007	6.961
2008	5.824
2009	-11.857
2010	14.99
2011	7.054
2012	3.842
2013	3.183
2014	4.613
2015	-0.318
2016	0.337
2017	3.322
2018	4.71
2019	2.344
2020	2.981
2021	3.231
2022	4.497
2023	4.31
2024	4.475