Year	Percent change
1980	4.402
1981	3.589
1982	1.866
1983	0.576
1984	-0.676
1985	-2.309
1986	-3.121
1987	-2.394
1988	-0.35
1989	1.166
1990	-1.009
1991	3.785
1992	-0.982
1993	1.275
1994	1.259
1995	5.249
1996	0.262
1997	-0.262
1998	-0.394
1999	-2.108
2000	-1.077
2001	-1.224
2002	0.138
2003	0.55
2004	0.274
2005	0.546
2006	1.9
2007	5.06
2008	6.084
2009	4.182
2010	3.784
2011	3.757
2012	2.875
2013	3.52
2014	2.2
2015	1.272
2016	2.029
2017	-0.852
2018	2.483
2019	-0.7
2020	2.24
2021	2.148
2022	2.107
2023	2.054
2024	2.055