Year	Percent change
1980	14.297
1981	-9.001
1982	4.49
1983	0.066
1984	2.193
1985	12.352
1986	10.095
1987	6.74
1988	11.556
1989	16.111
1990	8.6
1991	12.441
1992	13.838
1993	3.618
1994	11.501
1995	11.024
1996	12.117
1997	10.996
1998	5.308
1999	6.623
2000	5.226
2001	6.877
2002	2.29
2003	6.665
2004	14.432
2005	2.776
2006	5.04
2007	7.169
2008	-0.578
2009	-4.238
2010	2.351
2011	5.467
2012	0.316
2013	3.366
2014	0.25
2015	-1.726
2016	0.519
2017	-1.143
2018	4.942
2019	1.67
2020	3.277
2021	4.015
2022	3.724
2023	3.443
2024	3.3