Year	Percent change
1980	3.009
1981	7.671
1982	9.977
1983	5.835
1984	1.575
1985	-1.2
1986	-2.449
1987	-2.105
1988	-0.758
1989	0.701
1990	-0.163
1991	0.296
1992	1.146
1993	3.308
1994	3.561
1995	1.451
1996	2.206
1997	2.035
1998	-0.838
1999	-0.997
2000	-0.952
2001	-0.837
2002	0.589
2003	1.966
2004	2.435
2005	2.326
2006	1.077
2007	4.001
2008	5.122
2009	1.554
2010	0.99
2011	0.178
2012	2.58
2013	3.99
2014	2.502
2015	0.732
2016	2.262
2017	1.422
2018	1.9
2019	3.8
2020	3.2
2021	2.8
2022	2.3
2023	2.1
2024	2.2