Year	Percent change
1980	9.482
1981	8.526
1982	-0.521
1983	-3.486
1984	3.411
1985	2.188
1986	-3.079
1987	1.722
1988	1.283
1989	4.106
1990	5.176
1991	4.215
1992	3.541
1993	2.738
1994	4.941
1995	-6.291
1996	6.773
1997	6.847
1998	5.164
1999	2.754
2000	4.942
2001	-0.404
2002	-0.04
2003	1.446
2004	3.921
2005	2.308
2006	4.495
2007	2.291
2008	1.144
2009	-5.286
2010	5.118
2011	3.663
2012	3.642
2013	1.354
2014	2.804
2015	3.288
2016	2.922
2017	2.07
2018	1.994
2019	1.627
2020	1.935
2021	2.356
2022	2.643
2023	2.741
2024	2.74