Year	Percent change
1980	2.926
1981	1.513
1982	5.144
1983	-2.973
1984	5.751
1985	8.85
1986	11.723
1987	-6.375
1988	-2.41
1989	2.107
1990	2.506
1991	0.424
1992	1.696
1993	4.816
1994	5.814
1995	5.834
1996	8.786
1997	12.46
1998	8.763
1999	-1.557
2000	2.015
2001	1.739
2002	0.994
2003	1.231
2004	9.006
2005	7.916
2006	9.076
2007	10.02
2008	3.202
2009	-10.314
2010	8.417
2011	3.945
2012	3.038
2013	4.952
2014	2.414
2015	1.631
2016	3.309
2017	1.585
2018	0.944
2019	2.905
2020	2.696
2021	2.554
2022	2.595
2023	2.391
2024	2.394