Year	Percent change
1980	5.92
1981	3.051
1982	6.279
1983	5.307
1984	8.837
1985	4.746
1986	3.583
1987	7.139
1988	8.317
1989	8.088
1990	7.402
1991	0.74
1992	9.365
1993	0.701
1994	5.899
1995	9.924
1996	1.25
1997	2.641
1998	6.112
1999	4.996
2000	5.965
2001	3.952
2002	3.724
2003	2.623
2004	5.027
2005	4.853
2006	4.714
2007	5.098
2008	3.647
2009	-2.015
2010	1.334
2011	0.405
2012	-2.879
2013	-5.799
2014	-1.311
2015	1.962
2016	4.812
2017	4.468
2018	3.878
2019	3.463
2020	3.338
2021	2.902
2022	2.616
2023	2.486
2024	2.378