Year	Percent change
1986	7.285
1987	-15.029
1988	7.991
1989	24.519
1990	17.948
1991	14.31
1992	24.155
1993	3.432
1994	-7.346
1995	15.88
1996	21.164
1997	-16.658
1998	-13.444
1999	-3.633
2000	-6.233
2001	3.183
2002	13.344
2003	-8.074
2004	3.76
2005	2.847
2006	2.809
2007	9.571
2008	7.767
2009	5.151
2010	-3.108
2011	10.429
2012	10.531
2013	-4.131
2014	-19.658
2015	-24.068
2016	2.717
2017	1.285
2018	3.8
2019	39.001
2020	44.567
2021	4.66
2022	3.002
2023	1.584
2024	1.072