Year	Percent change
1980	-6.66
1981	2.61
1982	-1.275
1983	12.62
1984	24.338
1985	6.493
1986	8.536
1987	5.936
1988	3.931
1989	4.405
1990	3.577
1991	-0.151
1992	7.009
1993	8.646
1994	11.925
1995	8.006
1996	8.692
1997	13.47
1998	11.688
1999	11.299
2000	12.885
2001	-2.803
2002	3.636
2003	4.917
2004	11.399
2005	6.53
2006	6.631
2007	2.498
2008	-2.227
2009	-13.083
2010	13.128
2011	5.635
2012	2.706
2013	1.544
2014	5.078
2015	5.457
2016	1.897
2017	4.563
2018	4.589
2019	3.901
2020	2.957
2021	3.542
2022	2.799
2023	2.576
2024	2.136