Year	Percent change
1980	10.34
1981	9.193
1982	2.887
1983	6.015
1984	10.002
1985	0.715
1986	11.104
1987	13.395
1988	8.512
1989	2.277
1990	3.831
1991	5.702
1992	6.235
1993	6.201
1994	6.036
1995	2.374
1996	4.258
1997	5.1
1998	-5.883
1999	2.507
2000	7.663
2001	0.561
2002	1.657
2003	3.056
2004	8.7
2005	7.388
2006	7.033
2007	6.465
2008	2.128
2009	-2.459
2010	6.768
2011	4.815
2012	1.7
2013	3.102
2014	2.762
2015	2.388
2016	2.176
2017	3.838
2018	3.021
2019	2.727
2020	2.998
2021	3.018
2022	3.016
2023	2.96
2024	2.99