Year	Percent change
1980	6.17
1981	-0.771
1982	-4.667
1983	5.691
1984	10.05
1985	6.156
1986	-2.911
1987	5.447
1988	10.4
1989	10.158
1990	7.98
1991	5.114
1992	2.116
1993	-5.489
1994	10.332
1995	5.905
1996	3.837
1997	7.27
1998	5.758
1999	4.064
2000	10.186
2001	5.192
2002	0.291
2003	3.507
2004	7.975
2005	5.455
2006	5.854
2007	5.635
2008	0.954
2009	-11.899
2010	11.97
2011	5.954
2012	0.924
2013	0.694
2014	2.957
2015	3.621
2016	3.404
2017	5.115
2018	2.816
2019	2.287
2020	2.44
2021	2.243
2022	2.234
2023	2.027
2024	1.972