Year	Percent change
1980	2.5
1981	6.32
1982	4.127
1983	-1.51
1984	-5.626
1985	-0.624
1986	9.929
1987	6.463
1988	4.363
1989	1.419
1990	-1.7
1991	7.024
1992	5.541
1993	2.75
1994	3.514
1995	8.86
1996	5.465
1997	6.057
1998	8.242
1999	4.235
2000	8.385
2001	10.867
2002	5.941
2003	6.289
2004	5.136
2005	5.648
2006	6.531
2007	5.735
2008	3.847
2009	-2.768
2010	3.858
2011	-2.825
2012	-17.005
2013	1.963
2014	4.671
2015	1.913
2016	2.938
2017	1.663
2018	-2.131
2019	-2.276
2020	-1.256
2021	-0.664
2022	0.875
2023	1.07
2024	1.507