Year	Percent change
1980	3.229
1981	54.02
1982	-1.528
1983	-16.19
1984	66.5
1985	18.3
1986	-4.6
1987	-23.033
1988	14.359
1989	-10.017
1990	15.167
1991	4.244
1992	13.502
1993	-6.526
1994	-6.925
1995	3.749
1996	-4.621
1997	4.414
1998	-10.591
1999	-2.598
2000	-8.286
2001	6.932
2002	10.246
2003	10.344
2004	4.943
2005	6.662
2006	6.522
2007	0.725
2008	16.794
2009	10.383
2010	2.853
2011	0.674
2012	3.775
2013	5.73
2014	-6.445
2015	-3.036
2016	9.398
2017	9.803
2018	7.011
2019	5.169
2020	5.062
2021	5.336
2022	5.142
2023	5.17
2024	4.759