Year	Percent change
1980	-1.244
1981	-11.402
1982	-10.711
1983	-13.353
1984	-0.448
1985	8.559
1986	-12.033
1987	-2.164
1988	6.53
1989	12.927
1990	12.7
1991	10.933
1992	16.118
1993	5.056
1994	-6.883
1995	16.383
1996	1.723
1997	5.528
1998	25.609
1999	16.745
2000	8.634
2001	4.732
2002	-0.29
2003	2.804
2004	8.15
2005	-2.11
2006	4.791
2007	9.416
2008	-0.163
2009	-2.661
2010	6.134
2011	3.008
2012	1.754
2013	6.663
2014	7.932
2015	3.963
2016	1.668
2017	2.112
2018	-3.15
2019	0.98
2020	3.58
2021	3.85
2022	3.73
2023	2.98
2024	2.83