Year	Percent change
1980	6.025
1981	-18.163
1982	20.715
1983	6.583
1984	14.715
1985	17.675
1986	2.634
1987	7.919
1988	-8.543
1989	-27.798
1990	23.77
1991	-14.84
1992	-0.607
1993	-14.097
1994	-2.595
1995	2.971
1996	0.92
1997	5.308
1998	74.912
1999	33.746
2000	21.448
2001	-32.648
2002	-2.362
2003	8.681
2004	-0.185
2005	2.8
2006	12.31
2007	5.311
2008	3.61
2009	-12.775
2010	-7.574
2011	2.837
2012	-0.087
2013	16.053
2014	-3.426
2015	-27.031
2016	-1.716
2017	11.011
2018	2.027
2019	3.815
2020	3.047
2021	2.962
2022	3.003
2023	3.08
2024	3.081