Year	Percent change
1980	0.927
1981	-0.958
1982	2.658
1983	2.172
1984	8.055
1985	5.503
1986	4.359
1987	5.909
1988	2.11
1989	5.871
1990	6.289
1991	1.075
1992	2.465
1993	3.794
1994	9.927
1995	9.855
1996	7.643
1997	12.441
1998	0.859
1999	2.396
2000	9.749
2001	1.303
2002	0.819
2003	-0.84
2004	1.641
2005	7.053
2006	13.113
2007	-8.535
2008	0.403
2009	-10.373
2010	10.656
2011	6.212
2012	-0.728
2013	-0.846
2014	2.554
2015	6.666
2016	-1.293
2017	6.674
2018	-0.104
2019	0.788
2020	1.028
2021	1.216
2022	1.4
2023	1.428
2024	1.423