Year	Percent change
1980	0.221
1981	-5.353
1982	-2.645
1983	-1.328
1984	2.666
1985	10.077
1986	-3.691
1987	4.649
1988	8.17
1989	2.182
1990	-0.434
1991	-1.546
1992	5.491
1993	10.379
1994	2.485
1995	10.938
1996	7.204
1997	5.295
1998	3.246
1999	1.261
2000	8.313
2001	2.393
2002	0.989
2003	0.11
2004	2.833
2005	8.568
2006	7.463
2007	7.828
2008	1.55
2009	-17.024
2010	7.718
2011	3.496
2012	0.794
2013	3.985
2014	3.577
2015	2.802
2016	0.967
2017	-0.097
2018	1.38
2019	2.425
2020	3.28
2021	3.47
2022	3.612
2023	3.565
2024	3.565