Year	Percent change
1980	12.095
1981	-3.209
1982	36.554
1983	34.61
1984	31.292
1985	-10.922
1986	-25.565
1987	-48.336
1988	2.077
1989	1.432
1990	6.961
1991	16.625
1992	2.372
1993	-2.462
1994	9.339
1995	26.073
1996	15.266
1997	5.518
1998	-3.227
1999	2.523
2000	3.983
2001	-1.538
2002	-5.624
2003	-0.032
2004	3.817
2005	24.938
2006	38.171
2007	1.551
2008	-14.502
2009	-20.532
2010	9.89
2011	87.877
2012	-5.005
2013	-1.968
2014	1.472
2015	4.168
2016	9.806
2017	-3.958
2018	0.05
2019	1.592
2020	1.85
2021	1.684
2022	1.678
2023	1.714
2024	2.857