Year	Percent change
1980	-2.32
1981	8.341
1982	3.78
1983	-2.978
1984	9.681
1985	6.145
1986	4.566
1987	1.7
1988	7.697
1989	4.328
1990	4.635
1991	6.366
1992	4.108
1993	3.847
1994	8.219
1995	3.468
1996	5.338
1997	5.261
1998	2.943
1999	4.483
2000	6.116
2001	5.629
2002	0.12
2003	3.945
2004	4.683
2005	3.479
2006	3.365
2007	3.412
2008	6.105
2009	4.533
2010	4.816
2011	3.422
2012	4.781
2013	4.129
2014	5.989
2015	3.323
2016	0.589
2017	7.906
2018	6.29
2019	6.536
2020	6.263
2021	4.528
2022	4.475
2023	5.002
2024	5.022