Year	Percent change
1980	-6.431
1981	18.375
1982	7
1983	-28.935
1984	-46.67
1985	-36.696
1986	3.164
1987	8.613
1988	13.616
1989	-10.425
1990	-4.478
1991	-0.62
1992	-0.623
1993	32.23
1994	42.235
1995	14.315
1996	2.225
1997	4.203
1998	13.961
1999	-0.421
2000	1.48
2001	18.02
2002	14.12
2003	12.758
2004	1.076
2005	7.506
2006	12.452
2007	21.985
2008	-2.188
2009	3.587
2010	-16.358
2011	2.824
2012	4.711
2013	8.924
2014	8.466
2015	10.29
2016	10.078
2017	9.612
2018	0.446
2019	8.144
2020	4.995
2021	5.824
2022	5.427
2023	5.89
2024	2.568