Year	Percent change
1980	14.509
1981	22.797
1982	0.932
1983	-2.2
1984	5.7
1985	-13.03
1986	-2.06
1987	-3.447
1988	16.141
1989	18.547
1990	9.602
1991	-7.875
1992	13.112
1993	6.709
1994	-1.058
1995	6.29
1996	-2.487
1997	8.697
1998	5.351
1999	5.814
2000	6.464
2001	15.048
2002	-2.909
2003	-2.136
2004	7.184
2005	-1.177
2006	5.66
2007	8.599
2008	4.785
2009	-4.632
2010	15.427
2011	-3.376
2012	7.769
2013	-1.072
2014	2.197
2015	-2.604
2016	2.503
2017	2.768
2018	0.049
2019	0.1
2020	0.173
2021	2
2022	2.776
2023	2.82
2024	2.828