Year	Percent change
1980	18.201
1981	13.083
1982	8.979
1983	5.252
1984	46.673
1985	23.215
1986	-0.325
1987	3.042
1988	12.23
1989	11.367
1990	13.201
1991	19.332
1992	8.73
1993	6.691
1994	10.371
1995	6.84
1996	7.486
1997	5.557
1998	9.248
1999	5.974
2000	3.924
2001	6.773
2002	3.059
2003	3.445
2004	5.963
2005	7.702
2006	6.251
2007	2.779
2008	9.305
2009	3.227
2010	4.109
2011	4.756
2012	3.013
2013	2.583
2014	3.606
2015	0.674
2016	1.254
2017	2.853
2018	5.212
2019	3.837
2020	3.273
2021	3.058
2022	3
2023	3
2024	3