Year	Percent change
1986	2.682
1987	11.161
1988	3.192
1989	12.25
1990	8.407
1991	0.57
1992	6.776
1993	4.371
1994	6.17
1995	1.71
1996	5.717
1997	3.818
1998	2.145
1999	-0.585
2000	2.748
2001	1.16
2002	9.869
2003	0
2004	15.326
2005	1.053
2006	2.083
2007	8.036
2008	8.855
2009	9.978
2010	-0.296
2011	2.868
2012	5.481
2013	-1.732
2014	0.186
2015	0.37
2016	2.251
2017	1.022
2018	5.782
2019	4.5
2020	4
2021	3
2022	2.8
2023	2.8
2024	2.8