Year	Percent change
1980	-1.4
1981	-5.357
1982	-11.5
1983	-1.539
1984	-22.76
1985	-21.8
1986	54.622
1987	32.787
1988	7.039
1989	-1.23
1990	13.578
1991	19.027
1992	14.799
1993	11.851
1994	7.888
1995	3.099
1996	13.691
1997	21.042
1998	28.958
1999	13.423
2000	8.535
2001	24.921
2002	21.49
2003	8.522
2004	-3.82
2005	-15.567
2006	-11.169
2007	4.866
2008	-8.198
2009	3.915
2010	-18.136
2011	-31.798
2012	34.521
2013	35.021
2014	-2.281
2015	6.539
2016	0.922
2017	5.864
2018	6.917
2019	0.128
2020	0.803
2021	1.62
2022	2.954
2023	3.337
2024	3.207