Year	Percent change
1980	-1.855
1981	6.362
1982	-3.783
1983	10.062
1984	3.346
1985	13.813
1986	3.963
1987	-15.791
1988	22.953
1989	-3.83
1990	3.104
1991	10.5
1992	9.6
1993	4.2
1994	11.684
1995	11.26
1996	-2.123
1997	6.986
1998	-4.737
1999	7.631
2000	2.536
2001	-1.587
2002	0.624
2003	7.21
2004	17.178
2005	7.521
2006	5.734
2007	-2.006
2008	3.375
2009	-4.109
2010	1.111
2011	4.451
2012	4.997
2013	4.57
2014	6.179
2015	-0.436
2016	2.981
2017	0.162
2018	-0.749
2019	8.161
2020	3.536
2021	0.619
2022	2.394
2023	2.815
2024	2.608