Year	Percent change
1980	5.572
1981	4.1
1982	5.052
1983	1.593
1984	1.6
1985	4.073
1986	6.982
1987	5.811
1988	6.091
1989	4.554
1990	4.134
1991	1.339
1992	-1.08
1993	-0.095
1994	2.531
1995	4.287
1996	4.148
1997	0.411
1998	2.983
1999	2.199
2000	0.347
2001	3.979
2002	0.481
2003	2.949
2004	4.635
2005	5.665
2006	5.854
2007	6.851
2008	0.232
2009	3.307
2010	8.402
2011	6.112
2012	4.563
2013	5.879
2014	5.357
2015	5.718
2016	5.869
2017	4.874
2018	5.955
2019	5.837
2020	5.937
2021	6.203
2022	6.316
2023	6.017
2024	5.977