Year	Percent change
1980	-1.701
1981	7.181
1982	8.265
1983	13.242
1984	10.443
1985	7.75
1986	11.224
1987	12.467
1988	11.905
1989	7.03
1990	9.811
1991	10.354
1992	6.175
1993	6.847
1994	9.206
1995	9.571
1996	7.595
1997	5.922
1998	-5.471
1999	11.309
2000	8.924
2001	4.525
2002	7.432
2003	2.933
2004	4.9
2005	3.924
2006	5.176
2007	5.463
2008	2.829
2009	0.708
2010	6.497
2011	3.682
2012	2.292
2013	2.896
2014	3.341
2015	2.79
2016	2.929
2017	3.063
2018	2.668
2019	2.552
2020	2.849
2021	2.853
2022	2.838
2023	2.936
2024	2.908