Year	Percent change
1980	-7.761
1981	2.136
1982	-0.674
1983	-3.443
1984	10.537
1985	-2.691
1986	3.756
1987	9.018
1988	18.661
1989	17.994
1990	8.106
1991	-1.112
1992	-1.087
1993	-1.285
1994	23.642
1995	11.42
1996	11.029
1997	0.348
1998	-6.708
1999	3.606
2000	9.267
2001	1.029
2002	0.687
2003	3.397
2004	8.121
2005	6.1
2006	4.707
2007	2.185
2008	0.697
2009	-15.65
2010	11.173
2011	5.804
2012	5.41
2013	3.274
2014	8.268
2015	0.751
2016	-1.62
2017	3.426
2018	3.238
2019	2.235
2020	1.678
2021	2.854
2022	2.454
2023	2.336
2024	2.268