Year	Percent change
1980	19.367
1981	15.125
1982	4.614
1983	1.473
1984	2.049
1985	0.503
1986	2.174
1987	7.039
1988	0.829
1989	4.395
1990	4.331
1991	5.539
1992	5.661
1993	0.775
1994	2.664
1995	5.863
1996	0.925
1997	-0.006
1998	3.202
1999	2.415
2000	4.848
2001	5.273
2002	-0.256
2003	1.034
2004	1.46
2005	3.911
2006	3.564
2007	2.823
2008	5.55
2009	-0.157
2010	3.25
2011	2.769
2012	4.178
2013	1.472
2014	3.518
2015	-0.984
2016	-3.079
2017	0.105
2018	1.931
2019	1.919
2020	2.166
2021	2.022
2022	2
2023	2
2024	2