Year	Percent change
1980	22.037
1981	7.656
1982	2.428
1983	-1.185
1984	1.645
1985	-1.298
1986	2.614
1987	1.931
1988	1.111
1989	3.134
1990	4.558
1991	3.88
1992	3.417
1993	4.629
1994	2.652
1995	4.57
1996	2.52
1997	0.266
1998	2.114
1999	0.154
2000	1.641
2001	-1.685
2002	0.768
2003	-0.059
2004	1.619
2005	2.206
2006	0.678
2007	3.333
2008	1.26
2009	-0.247
2010	1.236
2011	2.028
2012	1.613
2013	0.338
2014	0.602
2015	0.132
2016	1.693
2017	1.216
2018	-0.059
2019	1.145
2020	1.223
2021	1.443
2022	1.437
2023	1.403
2024	1.437