Year	Percent change
1980	5.451
1981	4.375
1982	1.98
1983	3.01
1984	9.577
1985	1.001
1986	-0.149
1987	-2.894
1988	-1.695
1989	1.533
1990	11.697
1991	3.147
1992	2.584
1993	0.736
1994	9.079
1995	1.005
1996	2.328
1997	4.907
1998	1.176
1999	0.337
2000	5.925
2001	-3.398
2002	-5.198
2003	4.288
2004	3.987
2005	5.305
2006	8.465
2007	5.174
2008	6.449
2009	3.313
2010	1.629
2011	1.223
2012	1.755
2013	1.969
2014	2.304
2015	0.163
2016	3.472
2017	4.413
2018	3.2
2019	3
2020	2.8
2021	2.8
2022	2.8
2023	2.8
2024	2.8