Year	Percent change
1980	19.332
1981	8.559
1982	5.975
1983	2.23
1984	2.727
1985	2.666
1986	-0.029
1987	0.937
1988	0.23
1989	5.133
1990	4.2
1991	4.201
1992	2.837
1993	1.791
1994	1.427
1995	3
1996	2.048
1997	8.675
1998	3.684
1999	3.351
2000	2.11
2001	2.138
2002	2.078
2003	2.268
2004	2.25
2005	3.374
2006	8.487
2007	4.481
2008	5.3
2009	2.058
2010	0.851
2011	5.835
2012	0.816
2013	1.107
2014	0.248
2015	-2.302
2016	-0.342
2017	0
2018	-0.646
2019	-0.04
2020	1.967
2021	1.967
2022	1.967
2023	1.967
2024	1.967