Year	Percent change
1980	-11.508
1981	4.858
1982	7.872
1983	3.003
1984	15.142
1985	14.803
1986	6.462
1987	8.861
1988	8.8
1989	9.036
1990	8.978
1991	11.427
1992	14.695
1993	12.188
1994	8.497
1995	9.461
1996	9.46
1997	6.964
1998	8.982
1999	8.072
2000	-7.322
2001	-8.838
2002	2.737
2003	2.971
2004	3.637
2005	4.292
2006	5.123
2007	5.035
2008	6.958
2009	6.435
2010	6.624
2011	8.761
2012	9.019
2013	9.519
2014	8.056
2015	5.086
2016	2.763
2017	3.045
2018	3.225
2019	3.382
2020	4.216
2021	4.069
2022	3.991
2023	3.944
2024	3.851