Year	Percent change
1980	14.031
1981	-10.227
1983	10.127
1984	3.448
1985	11.111
1986	1
1988	-4.95
1989	-6.25
1990	5.6
1991	13.2
1992	15.7
1993	17.1
1994	12.2
1995	2.662
1996	0.338
1997	12.36
1998	8.5
1999	0.184
2000	12.971
2001	4.971
2002	-11.833
2003	9.876
2004	20.171
2005	-4.141
2006	7.62
2007	-1.846
2008	8.837
2009	-27.574
2010	16.52
2011	35.261
2012	-18.905
2013	2.262
2014	10.75
2015	12.267
2016	8.345
2017	2.573
2018	-0.784
2019	6.106
2020	3.834
2021	4.462
2022	4.63
2023	4.535
2024	5.456