Year	Percent change
1980	13.994
1981	12.276
1982	6.864
1983	5.452
1984	5.099
1985	2.358
1986	-0.461
1987	6.283
1988	4.418
1989	6.555
1990	3.412
1991	8.112
1992	3.302
1993	-0.969
1994	0.8
1995	2.838
1996	1.808
1997	3.551
1998	1.715
1999	2.928
2000	3.793
2001	-0.316
2002	0.912
2003	0.301
2004	4.304
2005	7.39
2006	5.63
2007	4.653
2008	7.276
2009	4.371
2010	6.498
2011	9.559
2012	2.413
2013	1.208
2014	2.388
2015	-2.507
2016	3.828
2017	6.567
2019	1.45
2020	2.304
2021	2.37
2022	2.315
2023	2.361
2024	2.322