Year	Percent change
1983	1.166
1984	3.098
1985	2.3
1986	1.776
1987	1.275
1988	1.193
1989	1.31
1990	2.133
1991	1.583
1992	1.259
1993	4.288
1994	2.448
1995	5.972
1996	1.965
1997	1.705
1998	-0.424
1999	-0.008
2000	1.174
2001	0.603
2002	-2.288
2003	0.3
2004	0.897
2005	1.087
2006	0.154
2007	0.966
2008	2.085
2009	1.043
2010	0.216
2011	0.141
2012	0.112
2013	0.389
2014	-0.207
2015	-0.415
2016	-0.739
2017	-0.171
2018	0.149
2019	0.274
2020	0.5
2021	0.5
2022	0.5
2023	0.5
2024	0.5