Year	Percent change
1980	9.19
1981	-4.4
1982	0.596
1983	-3.4
1984	5.307
1985	7.901
1986	7.544
1987	3.601
1988	0.264
1989	3.2
1990	-4.168
1991	1.031
1992	-0.555
1993	4.91
1994	5.839
1995	4.232
1996	0.182
1997	3.399
1998	0.345
1999	0.468
2000	4.384
2001	1.382
2002	3.053
2003	1.139
2004	5.757
2005	3.192
2006	3.955
2007	6.064
2008	5.095
2009	-0.119
2010	7.545
2011	3.986
2012	1.928
2013	3.008
2014	0.506
2015	-3.549
2016	-3.313
2017	1.057
2018	1.113
2019	2.055
2020	2.534
2021	2.218
2022	2.218
2023	2.218
2024	2.218