Year	Percent change
1980	-4.6
1981	11.601
1982	0.813
1983	-2.276
1984	16.469
1985	0.596
1986	2.499
1987	-13.832
1988	32.255
1989	14.138
1990	4.234
1991	-5.306
1992	8.483
1993	5.232
1994	12.45
1995	8.828
1996	7.245
1997	3.167
1998	-0.125
1999	12.255
2000	-0.797
2001	2.261
2002	9.808
2003	8.467
2004	16.904
2005	6.246
2006	-2.378
2007	9.147
2008	3.616
2009	-14.674
2010	10.789
2011	7.043
2012	2.781
2013	6.243
2014	7.891
2015	3.958
2016	3.268
2017	6.88
2018	6.481
2019	4.231
2020	2.988
2021	3.398
2022	3.534
2023	3.401
2024	3.189