Year	Percent change
1980	9.337
1981	6.458
1982	-2.605
1983	2.579
1984	-2.126
1985	4.431
1986	13.877
1987	2.141
1988	7.336
1989	10.473
1990	8.361
1991	5.839
1992	1.076
1993	0.629
1994	1.498
1995	8.939
1996	9.939
1997	8.439
1998	18.164
1999	14.487
2000	20.182
2001	0.992
2002	-3.434
2003	7.393
2004	4.418
2005	0.854
2006	13.311
2007	15.501
2008	1.32
2009	-20.353
2010	-3.431
2011	-9.448
2012	-9.099
2013	-2.393
2014	7.678
2015	0.404
2016	0.253
2017	7.081
2018	7.073
2019	5.158
2020	4.774
2021	4.313
2022	2.902
2023	2.197
2024	1.498