Year	Percent change
1980	18.999
1981	11.465
1982	4.17
1983	2.346
1984	3.844
1985	0.996
1986	0.5
1987	3.602
1988	6.8
1989	4.362
1990	6.591
1991	4.518
1992	3
1993	3.1
1994	6.485
1995	2.737
1996	2.965
1997	0.362
1998	3.262
1999	1.135
2000	-0.162
2001	1.935
2002	2.408
2003	1.994
2004	2.03
2005	2.099
2006	1.788
2007	1.416
2008	5.334
2009	-0.55
2010	3.37
2011	3.457
2012	3.377
2013	1.059
2014	1.089
2015	0.969
2016	-0.489
2017	2.432
2018	1.313
2019	1.97
2020	2.008
2021	2.008
2022	2.008
2023	2.008
2024	2.008