Year	Percent change
1980	-3.159
1981	3.811
1982	8.088
1983	-7.398
1984	20.96
1985	-0.161
1986	-1.199
1987	10.758
1988	-3.408
1989	20.773
1990	6.873
1991	-7.635
1992	10.116
1993	7.97
1994	14.994
1995	8.568
1996	7.979
1997	3.571
1998	-0.503
1999	15.732
2000	-1.175
2001	3.16
2002	11.254
2003	8.352
2004	17.394
2005	5.517
2006	-2.054
2007	8.68
2008	3.31
2009	-15.986
2010	11.465
2011	6.775
2012	3.864
2013	6.662
2014	8.933
2015	4.98
2016	3.627
2017	7.583
2018	6.779
2019	4.31
2020	2.988
2021	3.398
2022	3.534
2023	3.401
2024	3.189