Year	Percent change
1980	3.723
1981	3.94
1982	4.055
1983	-2.843
1984	-20.88
1985	-15.236
1986	2.367
1987	19.971
1988	12.449
1989	20.936
1990	6.238
1991	-2.972
1992	8.642
1993	14.213
1994	19.795
1995	15.613
1996	15.296
1997	14.997
1998	-14.144
1999	-24.09
2000	20.096
2001	1.347
2002	2.729
2003	8.492
2004	6.639
2005	4.608
2006	4.056
2007	3.365
2008	14.163
2009	-9.44
2010	18.522
2011	-1.655
2012	10.963
2013	0.22
2014	16.606
2015	8.23
2016	20.296
2017	22.083
2018	10.317
2019	13.587
2020	13.351
2021	6.611
2022	6.802
2023	6.904
2024	7.069