Year	Percent change
1982	10.526
1983	10.623
1984	5.298
1985	3.145
1986	4.268
1987	7.602
1988	8.152
1989	10.05
1990	11.416
1991	9.836
1992	9.701
1993	9.014
1994	9.516
1995	6.98
1996	6.658
1997	5.243
1998	-1.661
1999	-4.101
2000	-2.013
2001	-3.594
2002	-1.465
2003	-1.892
2004	0.413
2005	1.235
2006	2.304
2007	3.841
2008	2.041
2009	1.625
2010	2.829
2011	5.742
2012	3.733
2013	4.253
2014	4.916
2015	2.995
2016	2.411
2017	1.481
2018	2.408
2019	2.4
2020	2.5
2021	2.4
2022	2.5
2023	2.5
2024	2.5