Year	Percent change
1980	23.855
1981	13.267
1982	4.415
1983	4.228
1984	2.13
1985	2.085
1986	3.016
1987	4.816
1988	2.252
1989	7.665
1990	3.194
1991	5.556
1992	5.256
1993	1.568
1994	-0.012
1995	1.293
1996	1.701
1997	2.415
1998	0.956
1999	1.236
2000	0.848
2001	1.556
2002	0.17
2003	1.453
2004	2.394
2005	1.682
2006	2.593
2007	3.238
2008	6.36
2009	0.006
2010	2.81
2011	1.063
2012	1.357
2013	-0.046
2014	0.807
2015	-0.852
2016	0.008
2017	0.561
2018	1.359
2019	1.607
2020	1.752
2021	1.882
2022	2
2023	1.648
2024	2