Year	Percent change
1980	60.895
1981	8.862
1982	5.007
1983	-1.445
1984	0.265
1985	19.645
1986	-13.747
1987	7.394
1988	-9.275
1989	10.162
1990	8.727
1991	-17.824
1992	-5.197
1993	-4.084
1994	46.201
1995	-0.66
1996	-18.562
1997	17.694
1998	5.216
1999	-2.643
2000	-4.049
2001	-1.908
2002	-6.615
2003	-23.796
2004	9.224
2005	8.4
2006	1.841
2007	7.302
2008	-0.291
2009	9.103
2010	12.567
2011	-18.776
2012	8.934
2013	-36.953
2014	143.246
2015	32.054
2016	13.384
2017	-2.01
2018	5.677
2019	6.985
2020	5.439
2021	5.129
2022	5.351
2023	5.861
2024	5.56